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2022-09

Problems of Highway Maintenance Machinery

Problems of Highway Maintenance Machinery After years of large-scale construction, China's highway network has been basically formed, is about to enter a high tide of highway maintenance and repair. At the same time, the increasingly heavy traffic pressure puts forward higher requirements for the efficiency and quality of highway maintenance. These favorable factors will promote the development of highway maintenance machinery, and the concept of long-term "reconstruction and light maintenance" has led to the backward level of highway maintenance mechanization in China, so the future development space is huge and the market prospect is broad. Although the road maintenance machinery industry has made great progress, but the existing problems are also prominent, especially in the era of road maintenance, and the contradiction between the market demand is increasing. Specifically, the road maintenance machinery industry mainly has the following three major problems. 1, the industry foundation is weak, insufficient research and development. China's highway construction started late, the research on highway maintenance technology is not enough attention, most of the existing maintenance technology is introduced from abroad in recent years, therefore, the industry as a whole the original innovation ability is insufficient, advanced maintenance equipment is still mostly supplied by foreign manufacturers. 2. The industry has a high technical threshold, a long product promotion cycle, and the products also have the characteristics of multi-variety, small batch and customized production. Therefore, some large domestic construction machinery companies with research and development capabilities are currently unwilling to intervene. This also leads to the domestic enterprises engaged in the industry is generally small, research and development capacity and investment is insufficient, compared with similar foreign enterprises in product reliability and advanced there is still a gap, some of the technology and products in the country is still in the blank. 3, the industry standard system is not perfect. The standard system in the industry is not yet sound and perfect, and the basic standards that have a guiding role for the entire industry are still relatively scarce, which is not conducive to the rapid and healthy development of the industry.

2022-09-20

20

2022-09

Take you to understand the characteristics of grinding machine products

Product Features: 1. Imported switch with overload protection has the function of phase loss and leakage protection. 2. Equipped with vacuum cleaner connection device to provide dust-free working environment. 3, fast speed, can work for a long time, high grinding efficiency. 4, can add 12kg of weight iron, can effectively polish the old epoxy floor. 5, can adjust the ground grinding depth. 6. There are four kinds of diamond grinding discs for selection: extra coarse, coarse, medium and fine. The extra coarse disc is especially suitable for removing the old epoxy ground. 7, you can choose the combination of cheap grinding block. 8. The damping device designed with aviation rubber material is flexible and durable.

2022-09-20

19

2022-09

Xi Jinping sends a congratulatory letter to the International Forum on Industrial Chain Supply Chain Resilience and Stability

Xinhua News Agency, Beijing, September 19. On September 19, President Xi Jinping sent a congratulatory letter to the International Forum on the Resilience and Stability of the Industrial Chain Supply Chain. Xi Jinping pointed out that maintaining the resilience and stability of the global industrial chain and supply chain is an important guarantee for promoting the development of the world economy and conforms to the common interests of people all over the world. China will unswervingly safeguard the public product attributes of the industrial chain supply chain, ensure the security and stability of the domestic industrial chain supply chain, and take practical actions to deepen international cooperation in the industrial chain supply chain, so that the development results can better benefit the people of all countries. Xi Jinping emphasized that China is willing to work with other countries to seize the new round of scientific and technological revolution and new opportunities for industrial transformation, and jointly build a safe, stable, smooth, efficient, open, inclusive, mutually beneficial and win-win global industrial chain supply chain system, in order to promote the global economic cycle and help Contribute to the growth of the world economy and the well-being of the people of all countries. The International Forum on the resilience and stability of industrial chain supply chain opened in Hangzhou, Zhejiang Province on the same day, with the theme of "helping each other in the same boat, overcoming difficulties together, and pragmatically promoting the construction of a resilient global industrial chain supply chain". It is jointly organized by the Ministry of industry and information technology, the national development and Reform Commission, the Ministry of transport, the development research center of the State Council and the people's Government of Zhejiang Province.

2022-09-19

19

2022-09

What does the floor grinder floor grinder inverter display oL2 mean? Why can't the machine start? How to solve?

The situation is as follows: 1. The ground is very uneven, the resistance of the grinding disc is large, and the motor load is too heavy. 2. If this situation occurs when the new machine is used for the first time, it means that the governor has been adjusted to the fastest speed position, or the new grinding plate (block) Not open rough pressure on the rough hard surface, resulting in a large disc resistance, motor load is too heavy. 3. If the gearbox is repaired and the machine is initially tested like this, it may be that the gear assembly is not smooth and too tight, causing the grinding disc to rotate manually. It is not smooth, or the motor shaft and the center gear are not concentric after the motor is fixed during assembly, that is, the rotation is not concentric, which makes the electricity The rotation of the rotor is blocked and Caton occurs. Corresponding solution: 1, the machine up, move to a relatively flat ground area grinding, and then slowly cut into the uneven ground area, or use Other small grinding disc machinery will ground the rough surface of the potholes slightly smooth, and then use the machine to grind. 2. Roughen the grinding piece (block) on the cement floor. Press down on the armrest and raise the starter of the machine (make the grinding disc slightly off the ground). The machine (grinding disc) can be slowly landed. 3. Reassemble the gear or reassemble the motor to make the gear and the grinding disc rotate smoothly. After inserting the motor shaft into the central gear Concentric, suspend the motor and the box and energize the motor to start the motor, so that the motor, gear and grinding disc rotate smoothly. After shutdown, hand Rotate the grinding disc smoothly.

2022-09-19

16

2022-09

Aspiring to Flourish in Miles-Tianjin Strives to Build a World-Class Smart Port and Green Port

Haimen looks back at thousands of peaks and surges, and the port opens thousands of miles. When the first ray of sunshine shines on the sea in the morning, Tianjin Port once again opened a day of endless flow. Since the 18th National Congress of the Communist Party of China, Tianjin has thoroughly implemented the important directive spirit of General Secretary Xi Jinping "We must aim at thousands of miles, strive to build a world-class smart port and green port, and better serve the coordinated development of Beijing, Tianjin and Hebei and the joint construction of the'Belt and Road'". Work hard to accelerate the advancement of the world The construction of a first-class green smart hub port, actively promote the construction of Tianjin's northern international shipping hub, build a high-level Beijing-Tianjin-Hebei "maritime gateway" hub, build a high-quality "Belt and Road" open platform, serve the national strategy in precise positioning, and transform and upgrade Integrate into the new development pattern. From breaking ground to spring tide, from surging to sailing, Tianjin, facing the Bohai Sea in the east, is prospering because of the port and Changxing because of the port. From a difficult start to a wise leader, from the radiation to the world, Tianjin Port, which is backed by Tianjin City, is thriving and prosperous. Change "wisdom" to create "quality" to change wisdom port self-reliance and self-improvement Driving to the intelligent container terminal in section c of Tianjin port's northern Xinjiang port area, between the blue sea and the blue sky, the colorful terminal has already started the "efficient operation mode" -12 automatic quay bridges stand, loading and unloading containers efficiently from giant ships from all over the world, 76 intelligent horizontal transport robots shuttle back and forth, and 42 automatic field bridges operate freely...... On October 17, 2021, the world's first "smart zero carbon" terminal was put into operation in Tianjin. It took several years to do things abroad. Tianjin Port only took 1 year and 9 months to achieve a number of global initiatives, won the 2022 World Mobile Conference Global Mobile Award, and led the world's port intelligence with a new model. Upgrade trend. Even in the face of the complex and volatile international economic situation and the adverse effects of repeated epidemics in many places in China, the terminal is still constantly refreshing its operational efficiency, maintaining a contrarian growth of more than 20% per month in throughput this year. However, a few years ago, it was only an idle freight yard in the port area. At that time, Tianjin Port was still developing large-scale, alliance and automation in the port. In the trend of continuous exploration, accelerate the running in the transformation of development mode, optimize the structure of the layout of the "rush test" on the road. Aspiring in thousands of miles, bravely climbing the peak, no longer pursuing the extensive "volume effect" of the century-old port surged with "wisdom" to create "quality" change of the wave of the times, in the rotation of the sun and the moon, played a song to the sea to the strong high-quality development of the new movement. "Over the years, we have kept in mind the earnest instructions of General Secretary Xi Jinping, actively integrated into the construction of' Tianjin Smart Harbour', continuously strengthened the deep integration of new generation information technologies such as 5G, Internet, big data, artificial intelligence and block chain with various fields of ports, and contributed to the 'Tianjin Project' for the intelligent upgrading of global ports '." Wang Xuan, general manager of Tianjin Port Group Kexin Facilities Department, said. From the completion of the automation upgrade of the world's first single container terminal full yard rail bridge to the full completion of the world's first traditional container terminal full process automation upgrade project; From the launch of services such as the intelligent platform for port collection and dredging, the business model of "ship-side direct lifting" and "arrival direct loading" has been expanded, and the direct arrival rate of foreign trade container ships has reached 96%, operational efficiency is at the leading level in the world... Leading and exemplary "innovations" and "firsts" have been born one after another. The achievements of Tianjin Port's smart port construction have attracted the attention of the world, and the gold-lettered signboard of "Tianjin Port Efficiency" has been launched around the world. In 2021, to overcome the impact of the epidemic and poor international shipping, Tianjin Port completed a cargo throughput of 0.529 billion tons, an increase of 5.3 percent year-on-year; container throughput reached 20.27 million million TEUs, an increase of 10.4 percent year-on-year. In particular, container throughput has increased by nearly 70% compared to 10 years ago. In the first eight months of this year, Tianjin Port Group once again achieved "double growth" against the trend, completing a cargo throughput of 0.32 billion tons, an increase of 3.1 percent over the same period last year, and a container throughput of 14.53 million TEUs, an increase of 4.1 percent over the same period last year. Zhang Baoyi, president of the Tianjin Sociological Society, pointed out that to maximize the powerful role of the core strategic resources of Tianjin Port, Tianjin's role and actions in actively integrating into the national strategy, stabilizing the national economic market, and making every effort to build a domestic and international "double cycle" strategic fulcrum It is even more exciting. Develop Green Port with Low Carbon Walking into an inconspicuous building at the Tianjin Port Coal Terminal, behind an automatic door with a strong sense of science fiction, there is the intelligent centralized control center of the coal terminal. With the click of the mouse and the coordination of the walkie-talkie, the coal will be automatically loaded and unloaded. "In 2017, Tianjin Port comprehensively promoted the 'revolution to iron' and 'scattered to change', we carried out intelligent transformation of the dock, and invested nearly 0.2 billion yuan to complete the dumper pit sprinkler system, along the belt counterweight area closed, windproof network construction and other environmental protection upgrades. Today, the coal off the ship all the way 'closed' can be loaded on the train." Tianjin Port Coal Terminal Company Deputy General Manager Guan Kun said. Tianjin Port is a big coal port. Once upon a time, the operation here was open and dusty, and the coal transport vehicles were often "white cars coming in and black cars going out". Today, it is still an important port for "transporting coal from the north to the south" in China, but it has long been "transporting coal without coal", and the clear water reflects the blue sky. According to Chu Bin, chairman of Tianjin Port Group, green is the true color of the port and the background color of port development. "over the years, we have thoroughly implemented the spirit of General Secretary Xi Jinping's inspection of important instructions and the decisions and arrangements of the municipal party committee and municipal government, made every effort to build an intrinsically safe and green development model, continued to promote the construction of land-sea two-way green ports, and actively built a national demonstration green port." Thousands of sails are racing with great momentum. Aim at the green, the sword refers to "double carbon". In the past few years, a series of top-level designs have been introduced one by one; clean energy technologies have been applied one after another; special railway lines have been put into use one after another; the intelligent transformation of coal, ore and other terminals has changed the appearance of traditional bulk cargo transportation...... Today, Tianjin Port is actively building a double demonstration port of "revolution to rail + scattered collection". The proportion of iron ore railway transportation reaches 65%, which is in the forefront of ports in the country. The use of shore power for 100 per cent of the berthing of ships in its own port, and the utilization rate of low-sulfur oil for ships reached 100 per cent. The first domestic port ecological environment atmospheric intelligent monitoring platform to achieve port-wide coverage. The world's first zero-carbon terminal smart green energy system has been connected to the grid for nearly 9 months, with a cumulative power generation of about 17.5 million kWh, reducing carbon dioxide emissions by more than 18000 tons, and saving more than 5200 tons of standard coal. Almost every day, Zhang Zhiqiang, an iron ore receiver of Rongcheng Group, and his colleagues wait for the special train from Tianjin Port. "At present, most of the ore transported from Tianjin Port directly into the factory by rail, almost 4 trains a day. Last August, the city's bulk hydrogen container truck application pilot landed between Rongcheng Group and Tianjin Port. It is expected that the railway will reduce the number of cars transported by nearly 20000 times per year, and the hydrogen energy heavy truck will be put into use on the first anniversary to reduce carbon dioxide emissions by 633.7 tons." Rongcheng group related responsible person said. A carbon emission intensity chart of Tianjin Port since 2012 shows that in the past 10 years, the container throughput of Tianjin Port has increased by nearly 70%, but the carbon emission intensity has decreased by 16%. The fruitful results of the construction of a green port in Tianjin Port are self-evident. Hub to promote coordination of the world port Jintong world One day not long ago, just after midnight, the lights were brightly lit on the Eurasian International Container Terminal of Tianjin Port. The 27 containers of Shanghai Puhai Shipping Company were neatly stacked on a foreign trade container ship named "Mediterranean Mundra. As a whistle pierced the night sky, the freighter sailed out overnight. "This batch of goods is glass products, produced in Hebei Province, and will be exported to South Korea, Chile, Brazil and other places after transit through Tianjin Port." Li Meng, deputy manager of the terminal operations department, said. At the same time, two more Bohai Rim feeder freighters sailed to the Beijiang Port area of Tianjin Port one after another, berthing at the Tianjin Port Container Terminal and the Tianjin Port Alliance International Container Terminal, the operation started, the vehicles shuttled, and the Tianjin Port in the night was as busy as day. The seemingly ordinary cargo turnover shows the fruitful results of Tianjin's role as a port hub, serving Beijing, Tianjin and Hebei and connecting the world. "When inspecting the Tianjin Port Terminal, General Secretary Xi Jinping emphasized that better serving the coordinated development of Beijing-Tianjin-Hebei and the joint construction of the'Belt and Road' has enabled Tianjin Port to find a new direction in the national strategy." Chu Bin said. Give full play to the resource endowment, actively practice the strategic mission of serving the country, Tianjin Port takes the initiative to benchmark the positioning of Tianjin's northern international shipping hub, and makes every effort to build an internal and external hub port. Sea direction, integrating global resources, focusing on the development of container routes, promoting the misplaced development of Tianjin and Hebei ports, and the cooperation between the north and south ports, forming a container trunk and branch linkage network with division of labor and cooperation and complementary advantages, with more than 130 container routes and more than 550 flights per month, maintaining trade with more than 800 ports in more than 200 countries and regions in the world. Lu Xiang, the layout of more than 120 direct stores franchise stores, set up 40 Beijing-Tianjin-Hebei marketing outlets, smooth more than 40 sea-rail combined transport and a number of international land bridge transport channels, set up a new sea channel for the export of foreign trade goods in the west. Tianjin Port China-Mongolia-Russia Economic Corridor Container Multimodal Transport Demonstration Project was awarded the National Demonstration Project. As a logistics network that radiates inland and covers the world becomes more and more dense, Tianjin Port deeply serves the new development pattern, actively helping the "double cycle", with more confidence and stronger motivation. Ren Wei, deputy general manager of the business department of Tianjin Port Co., Ltd., introduced that at present, 70% of Tianjin Port's foreign trade containers come from the Beijing-Tianjin-Hebei region, and the three-year average growth rate of the Bohai Rim branch line has reached 37.5; the throughput of ports along the "Belt and Road" accounted for more than 60%; in the first half of this year, sea-rail intermodal transport completed 628000 TEUs, an increase of 25.5 year, the year-on-year growth rate was 79%, ranking first in the country. At the top of the mountain, you can see the river rushing. Above the peaks, I feel the wind is mighty. "Facing the future, we will always keep in mind the ardent instructions of General Secretary Xi Jinping, build a world-class green port with greater efforts, build a world-class smart port with updated technology, build a world-class hub port with a broader vision, and continue to enhance the service industry chain and supply Chain capabilities, and strive to build Tianjin Port into a world-class smart port and green port with complete systems, efficient services, and integrated development of port and city, to provide strong support for building an international shipping hub in the north, promoting high-quality development of the regional economy, and promoting the formation of a new pattern of comprehensive opening up." Chu Bin said.

2022-09-16

16

2022-09

The RMB exchange rate broke "7! What are the effects?

On September 15, Beijing time, in the foreign exchange market, the spot exchange rate of the offshore RMB against the US dollar fell below the integer mark "7". After a lapse of more than two years, the RMB exchange rate against the US dollar once again entered the "7" era. What will be the future trend? What will be the impact of "breaking 7? The country is a through train comprehensive official and expert authoritative views, the introduction of "ten questions and ten answers": 1 Is the RMB exchange rate against the US dollar breaking "7" good or not? How should we look at it? China is a through train: the RMB exchange rate breaks "7", which is really not as serious as everyone thinks. It is just a price and will definitely rise back. This is inevitable. When the RMB broke "7" in 2019, the central bank said that the RMB exchange rate "broke 7". This "7" is not an age, and it will not come back in the past, nor is it a dam. Once it is broken through the flood, it will pour thousands of miles; "7" is more like the water level of a reservoir, which is higher in the wet season and will fall again in the dry season. It is normal to rise and fall. We should realize that the RMB exchange rate does not have the basis for long-term depreciation, nor will there be a unilateral market that has been falling or rising. Even if the "7" is broken this time, in the future, with the stabilization of the domestic economy and the correction of the US dollar index with the use of some tools, it is inevitable to rise back to the "6" range. In fact, the impact of exchange rate ups and downs is an old topic, and exchange rate depreciation has both advantages and disadvantages. Moderate depreciation is conducive to enhancing the competitiveness of export trade and price advantage, and promoting the recovery of the real economy, but the import cost of importing enterprises will increase. For example, shoes and boots accessories, textiles and clothing, and leather bags account for a large share of China's export trade. A moderate depreciation of the renminbi may benefit companies in these industries. Conversely, industries that need to import raw materials, goods and services from overseas, as well as companies carrying more dollar bonds, may be negatively affected. 2 On September 6, the central bank lowered the foreign exchange deposit reserve ratio of financial institutions by 2 percentage points. Why does the exchange rate continue to depreciate? China is a through train: first of all, the central bank announced the news of foreign exchange "interest rate cut" on September 6, not on that day. Starting from September 15, 2022, the central bank will reduce the foreign exchange reserve requirement ratio of financial institutions by 2 percentage points, that is, the foreign exchange reserve requirement ratio will be reduced from the current 8% to 6%. Therefore, in recent days, the foreign exchange "interest rate cut" is more of a signal effect, is to "shout" to the market, if there is an irrational devaluation, the official will not sit idly. 3 Is the devaluation of the RMB less valuable? Will the devaluation push up the cost of imports, which in turn will lead to higher prices? The country is a through train: the "worthless" of RMB devaluation is only reflected in the purchase of US dollars with RMB. The cost of imports does increase when imports need to be settled in dollars. However, please note that if the import settlement is in euros, yen and sterling, the cost is actually decreasing recently, because the RMB is actually appreciating against these currencies. As for the issue of rising prices, most of China's CPI composition is used for food, and the country can be self-sufficient. The depreciation of the RMB against the US dollar has little impact on our own internal prices. 4 Regardless of whether it goes up or down, if I only use RMB for domestic consumption, does the devaluation of the RMB exchange rate have no effect on me? The country is a through train: not necessarily. If the products you consume domestically are imported through US dollars, or their parts are purchased in US dollars, the cost of RMB depreciation may be transferred to the price of the products you want to buy, which will become more expensive. To give the simplest example, if you go overseas through cross-border e-commerce in China and the final consumption is denominated in US dollars, it will have an impact on you. 5 Why is the dollar worth so much after printing so much? Is the dollar appreciating against the world's major currencies? The country is a through train: four words, dollar hegemony. Former U.S. Treasury Secretary Connery said, "Our dollars, your troubles." Generally speaking, if you keep spreading money and "releasing water" crazily, money will definitely be worthless. But the key problem is that the US dollar occupies an absolute monopoly position in various fields such as global trade, payment, finance and foreign exchange reserves. So, the Fed put "water" is actually the world in digestion, the Fed can raise interest rates and lower interest rates to control the flow of "water" and the price of the dollar, the appreciation of the dollar this year is in the early in order to deal with the epidemic "big water" after the start of the interest rate hike, the dollar back to the local market, pushing up the price of the dollar. 6 Not only is the yuan depreciating, but other currencies are also depreciating against the dollar. Will the increase in import costs make "the whole people pay the bill? China is a through train: "It's not only the RMB that is depreciating" is indeed the current situation. As mentioned earlier, the euro, yen and pound have fallen more sharply than the RMB, so the RMB is actually appreciating relative to these non-US currencies. Price advantage and product advantage are important factors that determine business. At this time, it depends on the competitiveness of exports, and it is necessary to conduct specific analysis according to different industries. As for the increase in the cost of imports, on the one hand, the commodities in our CPI composition can basically be self-sufficient without too much worry; on the other hand, there are some commodities involved in the cost increase of exchange rate changes. China has a set of pricing mechanism in the supply of many necessities of life, and the final price after the pricing mechanism comes out is not necessarily paid by the whole people. 7 Will the yuan continue to depreciate, and will funds "run" out? China is a through train: it is undeniable that in this wave of devaluation of the RMB, there will certainly be some funds going out, but these funds are generally funds with short-term investment purposes or even with a speculative mentality. Now, China's foreign exchange market is operating normally, and cross-border capital flows are also orderly. At the end of last week, Zheng Wei, deputy director of the safe, said that at present, China's cross-border capital flows are generally stable, and the supply and demand of domestic foreign exchange remain basically balanced. The fundamentals of China's long-term economic improvement have not changed, and it continues to attract direct investment and capital inflows for the purpose of medium-and long-term asset allocation. In the first half of 2022, China's net direct investment inflow was US $74.9 billion, of which the net inflow of direct investment from China was US $149.6 billion, showing that the Chinese market remains attractive to foreign investment. 8 The United States has been raising interest rates recently. Is now the time to buy US dollar deposits and finance and buy gold? China is a through train: it is true that the interest rate of US dollar deposits in some banks is already higher than that of RMB, but it should be noted that the high interest rate of US dollar deposits does not necessarily mean that they can enjoy high returns, because the final returns have to take into account changes in exchange rates. For example, assuming that the interest rate on US dollar deposits is 3.5 per cent a year, if the RMB appreciates by only 4 per cent against the US dollar in this year, probably from the current level to about 6.6, it will actually be a loss, and there will be a handling fee for the exchange of foreign exchange, which will be empty. And now the flexibility of the two-way fluctuation of the RMB has increased. The 6.6 level appeared three or four months ago, and it is entirely possible to rise back in the next year. So, don't bet on the exchange rate, because no one can know. As for gold, everyone thinks it is a good safe-haven asset, but it is not a safe-haven asset for the devaluation of the RMB exchange rate. Looking at this round and the previous round of RMB devaluation this year, the price of gold has hardly changed. Investing in gold still depends on the overall international situation and the trend of the US dollar. 9 Why stabilize the exchange rate and lower the foreign exchange reserve? How does this work? The country is a through train: the essence of the exchange rate of RMB against the US dollar is the price, the price is determined by the relationship between supply and demand, the reduction of the foreign exchange reserve ratio will release the liquidity of the US dollar, and there will be more US dollars in the foreign exchange market, so the US dollar will not be so expensive. 10 What other tools does the central bank have to control the exchange rate when the RMB exchange rate "breaks 7? The country is a through train: no country's central bank will allow its currency to appreciate or depreciate rapidly. The People's Bank of China has a lot of monetary policy "toolboxes", and it is also very experienced in dealing with speculation in the foreign exchange market. In the past few years, it has "fought" with the short positions of the RMB exchange rate and returned triumphant. In addition to the foreign exchange risk reserve ratio that has been introduced, the central bank's tools to prevent rapid exchange rate depreciation include counter-cyclical factors, foreign exchange reserve ratios for financial institutions, and macro-prudential coefficients for cross-border investment and financing. Disclaimer: The above content is transferred from other media on this website. The relevant information is only for the purpose of transmitting more information. It does not represent the views of this website, nor does it mean that this website agrees with its views or confirms the authenticity of its content. If there is any infringement, please contact (0531) 8519 6822.

2022-09-16

16

2022-09

Mei Tengqi MM series industrial vacuum cleaner

Meitengqi MM series desktop industrial vacuum cleaners are used in relatively narrow working areas. The body is beautiful and generous. It can be fixedly installed on large equipment as a fixed dust collection device and used in conjunction with production equipment, such as laser marking machines, powder filling machines, etc. Product Features: 1, the body is small, suitable for narrow work area; Low noise, suitable for quiet work area; 3. With overload, filter, lack of phase protection switch; 4, can work continuously for 24 hours

2022-09-16

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