"Start!" On January 30, at the production site of the Aviation Industry West Wing Assembly Plant in Xi'an, Shaanxi Province, more than 60 employees were busy, and the 17-meter-long C919 wing was being assembled. "We have fully mastered the digital manufacturing technology of large aircraft wings and realized the transformation from following to leading," said Wang Chao, director of the West Aircraft Wing Assembly Plant of the Aviation Industry. "Success!" On January 10, the 20-high stainless steel cold rolling mill developed by the China Heavy Machinery Research Institute in Liugang Zhongjin Stainless Steel Co., Ltd. in Yulin, Guangxi, successfully completed the cold linkage commissioning. "This is another landing application of domestic 'hand tearing steel' equipment," said Liu Yunfei, head of the Institute of Plate and Strip Rolling Equipment of the China Heavy Industry Research Institute of China National Machinery Heavy Industry Corporation. It is expected that the equipment will be officially put into production within this year. The equipment manufacturing industry is an important tool of the country and an important part of the real economy. High-end equipment industry refers to the equipment industry with high technology content, high added value and high degree of digitalization, including civil aviation and aerospace equipment, high-end energy equipment, intelligent manufacturing equipment, etc. What new progress has China made in the field of high-end equipment in recent years? How to develop in the future? The reporter conducted an interview. The scale and quality of heavy equipment of major countries have been steadily improved, and the key fields have been continuously broken through. The National Bureau of Statistics released data that in 2022, the profit of equipment manufacturing industry increased by 1.7% over the previous year, accounting for 34.3% of the industry above the designated size, up 2 percentage points over the previous year. Among them, the profit of railway, ship, aviation and aerospace transportation equipment industry increased by 44.5% over the previous year; The profit of the electrical machinery industry increased by 31.2%, which is the manufacturing industry that has driven the largest growth of industrial profit. The first deep-water jacket platform in Asia, "Haiji No.1", was officially put into operation. The first F-class 50 MW heavy-duty gas turbine with fully independent intellectual property rights was successfully shipped in China. The world's first pile-girder integrated bridge-building machine, "Gonggong No.", and the world's largest single unit capacity of 16 MW offshore wind turbine unit were smoothly brought down. In 2022, the high-end equipment industry achieved breakthroughs in many key areas, with continuous expansion in scale and continuous improvement in quality and energy level. ——To overcome difficulties, the technical support for large passenger aircraft has been continuously strengthened. In 2022, the C919 large passenger aircraft was successfully delivered, and the "Kunlong" AG600M fire extinguisher made a stunning debut, and China made a brave climb in the field of air transport equipment. The development of large passenger aircraft represents a country's comprehensive capability in the field of large equipment manufacturing. For example, most large passenger aircraft have a pair of slender and beautiful wings, which are the most complex airframe structural parts on board, and test the ability of flexible manufacturing of civil aircraft structural parts. "We have undertaken the assembly work of five work packages, including the wing box, flap, aileron, slat and middle fuselage of the C919 large passenger aircraft, accounting for more than 50% of the C919 airframe structure." Wang Chao said that in order to insert the "Chinese wing" into the domestic large aircraft, the aviation industry Xifei has broken through more than 200 technical problems. ——Pursue green, and high-end energy equipment is more independent and controllable. As the "heart" of the nuclear power turbine unit, the rotor rotates at high speed when it works, and has to bear huge centrifugal force and torsional force. How to ensure high strength and toughness of rotor is a difficult problem. "We started in 2012