From a regional perspective, from January to August this year, the construction enthusiasm of many provinces in the northeast, northwest, and southwest maintained growth. With the introduction and implementation of the economic stabilization package policy, the overall machinery operating rate of 17 provinces and cities achieved a positive month-on-month growth in July. Jilin Province even set the highest national operating rate of 78.01 in August this year.

In addition to infrastructure construction, in construction machinery and equipment, front cranes and stackers are used for container loading and unloading in ports, which are closely related to import and export trade. The provinces and cities with active foreign trade this year are mainly concentrated in the southwest, central China, northeast and other regions, and many inland provinces and cities have performed well. In August, the operating rate of port equipment in Sichuan Province reached 88%, the highest this year.

The high level of the "excavator index" shows that the efforts of macro-policy to carry out infrastructure investment ahead of time have achieved remarkable results. At present, from the central to the local level, specific arrangements have been intensively implemented to accelerate the construction of new infrastructure while improving the level of traditional infrastructure.

In Ningxia, the country's largest desert photovoltaic base-Tengger Desert 3GW new energy base photovoltaic compound project held a groundbreaking ceremony a few days ago. As a key supporting project of the "Ningdian into Hunan" project, the total installed capacity of the project is 3 million kilowatts and the total investment is 15.25 billion yuan.

In Hainan, Haikou City has just held the third batch of major projects in 2022, with 30 projects with a total investment of 17.39 billion yuan, with a planned investment of 3.05 billion yuan this year.

Since the beginning of this year, the construction of 102 major projects in the "14th Five-Year Plan" has been continuously accelerated, and more than 2600 projects that have been separated have been implemented in a safe and orderly manner.

Su zimeng, President of China Construction Machinery Industry Association: throughout this year, I think the construction machinery industry should be in a stable operation state, and the export should have a rapid growth. A series of major equipment on the market, it should be said to meet the needs of the national (economic) construction of various key projects.

Recently, my country's policy-based development financial instruments have continued to expand. The State Council executive meeting held not long ago made it clear that on the basis of 300 billion yuan of policy-based development financial instruments that have fallen to the project, the amount of more than 300 billion yuan will be increased. The renovation of old neighborhoods and provincial highways will be included in the areas of support; the local special debt limit of more than 500 billion yuan since 2019 will be activated in accordance with the law, with 70 per cent retained in various places and 30 per cent allocated by the central government as a whole and tilted towards areas with more mature projects. It will focus on supporting transportation infrastructure, energy, agriculture, forestry and water conservancy, ecological and environmental protection, social undertakings, urban and rural cold chain and other logistics infrastructure, municipal and industrial park infrastructure, major national strategic projects, affordable housing projects, new energy projects and new infrastructure project construction.

The construction of major projects is in full swing, stimulating investment, but also constantly stimulating the development of China's construction machinery industry.

In recent years, many major equipment in our country have made historic breakthroughs, such as 4000-ton crawler cranes, 2000-ton all-terrain cranes, and hydraulic excavators with more than 100 tons. Construction machinery and equipment continue to move towards the middle and high end. Next, let's go to see a domestic "Big Mac"-currently the largest tonnage crane in China. Its lifting weight can not only reach 4500 tons, but also can do fine work accurate to millimeters.

Not long ago, at the refining and chemical integration construction site in Longkou, Shandong Province, a reactor with a height of 32.7 meters and a weight of more than 1400 tons was hoisted to a designated location. The hoisting equipment is currently the largest 4500-ton crawler crane in China. Although they are all huge objects, the hoisting position is accurate to millimeter level.

Zhang Yang, deputy dean of an equipment research institute: Our car is equipped with various sensors. Move a handle, it can move a little bit to ensure that we will not have an impact on the hole at the end.

Large tonnage cranes are expensive and have a long production cycle, and have been dependent on imports for more than a decade. In the process of more than 10 years of research and development, the scientific research team has cooperated with many domestic universities to use digital prototypes to conduct repeated trial and error experiments.

Zhang Yang, deputy dean of an equipment research institute: We have made a digital prototype, which is equivalent to a physical machine, and we have made it exactly the same on the computer, including the construction of all electromechanical and hydraulic power systems, and then joint simulation.

After more than ten years of continuous trial and error, domestic large-tonnage cranes can finally show their talents in the construction of major projects. They not only have the heaviest lifting tonnage in the world, but also can deform. The herringbone system has a wide bottom and a narrow top, which not only improves the stability of the crane, but also can disassemble 4500 tons into two 2000 tons that operate independently. The modular design not only meets the lifting requirements of various weights of the construction parties, it can also save the cost of loading and unloading, transportation and other links of the crane.

In addition, before the construction, the enterprise will also carry out "tailor-made" according to the needs of each engineering operation to ensure the safety of the project. At the same time, the material production of crane parts will gradually realize localization, reduce manufacturing costs, and drive upstream and downstream enterprises to work together.

Zhang Yang, vice president of an equipment research institute: we cooperate with well-known steel mills in China. One is steel plate and the other is steel pipe, which can be delivered in three months. We have been building a crane for less than a year now, and the cost has been reduced by half. (Now) steel mills have begun to export the steel we use to foreign countries.