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China Railway Changan Heavy Industry Co., Ltd. is the only specialized company under China Railway Construction China Railway 20th Bureau Group Corporation, which specializes in high-end equipment manufacturing, steel structure industry and extending strategic emerging business. It is mainly engaged in R&D and manufacturing of high-end equipment such as new energy equipment, tunnel construction equipment and special equipment, steel structure engineering design, manufacturing and installation, overseas service and innovative extension of emerging business sectors. The registered capital of the company is 300 million yuan, and there are 800 employees and 450 professional and technical personnel. It has a production base of 303 mu in yanliang district, Xi 'an, including nearly 100,000 square meters of modern workshops and 70 sets of large-scale equipment.

The company has been engaged in manufacturing for more than 60 years. In 1991, it was the first company to obtain the production license of large-scale road rollers. The road roller products it produced won the title of "Top Ten Famous Brands of Road Roller in China", and it has the certification of "Three Standards" management system, the manufacturing license of mechanical parking equipment, the B-level license of bridge and gantry cranes and the production license of new sleepers. In terms of engineering construction, it has the special qualification certificate of steel structure manufacturing enterprise, the first-class qualification of steel structure engineering contracting, the second-class qualification of light steel structure engineering design, the third-class qualification of general contracting of construction engineering, the third-class qualification of general contracting of petrochemical engineering and the qualification of construction labor. Obtained AAA certification from Shaanxi Enterprise Credit Association and AAA certification from China Industrial Cooperation Association, and was elected as the executive director of Shaanxi Enterprise Credit Association. The company has successfully passed the certification of "Specializing in Special Innovation" enterprises in Shaanxi Province and the fourth batch of "Little Giant" enterprises at the national level, and won the "Top 20 Scale Benefits of Non-industrial Sectors of China Railway Construction Third Class Company" for two consecutive years.

Industrial manufacturing. The company has always placed scientific and technological innovation at the strategic center of enterprise development, and concentrated its efforts on overcoming more than 20 technical bottlenecks of "sticking neck" through independent and joint ways. Six high-end equipments have set a precedent of "the first in China" and "the first in Shaanxi", and successively developed 45T, 55T, 65T and 75T series subway construction equipment (electric locomotive sets), portal cranes, intelligent lining trolleys, inverted arch assemblers and tunnels. Especially in 2020, the first set of domestic electric ballasting equipment (electric excavator, electric loader and electric dump truck) for new energy tunnel construction was successfully developed, becoming the first industrial manufacturing enterprise in China to help the construction of plain roads, tunnels and plateau railways. Steel bridge. The company adopts the integrated warp pattern of "design, manufacture and installation", optimizes the whole industrial chain from design, manufacture and installation of steel structure engineering, and builds a steel structure bridge team with excellent technology and advanced management. At the same time, we have implemented the horizontal and vertical strategy of basing ourselves on key provinces and cities, radiating the whole country and setting foot in overseas, and set up nearly 20 production bases in Ouxi, Hubei, Gansu, Shanxi, Hebei, Yunnan, Chengdu and other places with an annual output of more than 500,000 tun. Participated in a number of large-scale steel structure projects such as river-crossing bridges, river-crossing bridges, sea-crossing bridges, municipal steel bridges, airports, stadiums, factories, and heterosexual steel structure projects, and won many national and provincial and ministerial honors. Logistics trade. Adhering to the concept of "creating value for customers" and taking "900% quality and quantity guarantee" as the standard, the company implements the "7+ (supply+,quality+,service 10, supervision+,cost reduction+,emergency 10, bottom+) guarantee system with high quality, and customizes the material supply scheme for customers, and has participated in Lanxin, Nankun and Baodong successively. Overseas, we have successfully completed the construction of key foreign projects and the supply of equipment and materials in Angola, Mozambique, Pakistan, Brazil, Thailand and Mongolia. In terms of innovative business, the company is deeply integrated into the national strategy of "peak carbon dioxide emissions" and "carbon-carbon neutrality", adhering to the concept of "high-end intelligence, environmental protection, honesty and win-win", taking accelerating the development of "two innovations" as a breakthrough, and using the "Industry-University-Research" collaborative innovation mechanism to further meet market demand, strengthen technological innovation and product upgrading, and steadily enhance core competitiveness. The first batch of new energy "pure electric" plateau tunnel construction equipment "Tianlu" developed by the company has been put into production in batches, and the cumulative total running time is "over 30,000 hours+40,000 kilometers", making it the longest practical application time, the highest altitude and the most reliable pure electric digging and loading equipment in China. Companies focus on market segments, supported by products and services, and improve market share. The sales of series of electric locomotives are among the top three in China, and the market share of electric locomotives over 65T ranks first in China, which provides more effective green power for national infrastructure construction. By the end of 2021, the company won 53 scientific and technological awards. Among them, he won one national prize of "the first prize of the fourth national equipment management and technological innovation achievements"; 10 provincial and ministerial awards such as "Second Prize of Shaanxi Scientific and Technological Achievements", "First Prize of the Fifth Shaanxi Shimu Building Science and Technology Award" and "First Prize of the Seventh Shaanxi Green Building Industry Scientific and Technological Innovation Achievement Release"; 17 joint-stock company-level awards such as "the first prize of scientific and technological progress" and "the second prize of excellent QC team achievements in industrial manufacturing"; There are 25 group-level awards, such as "Special Award for Scientific and Technological Progress of Group Company" and "Advanced Unit for Economic and Technological Innovation". Obtained 79 national patents, including 6 invention patents, 4 design patents and 69 utility model patents; 1 outstanding invention patent award and 2 outstanding utility model awards of the joint-stock company; He also edited 1 national standard, 4 industry standards and 1 physical standard. The company won more than 241 comprehensive awards, including 56 collective awards and 185 individual awards. It has successively won 7 national awards such as "Advanced Female Workers Collective", "National May 1st Labor Model" and "Bronze Award in the Second National Construction Industry Finance and Taxation Knowledge Competition"; 20 provincial and ministerial awards such as "Top 100 Innovative Enterprises in China in 2021", "Advanced Team", "Model Workers in Shaanxi Province" and "Top Ten Outstanding Young Entrepreneurs"; There are 19 joint-stock company-level awards such as Top Ten Models of China Railway Construction, May 4th Red Flag Youth League Committee, Youth Civilization, Pioneer of Workers in 2020 and Advanced Individuals in Management, and 195 group company awards such as Four Excellent Leading Groups, Advanced Units in Trade Union Work and Advanced Workers. The strength of the company is strong, and the scale is expanding. In the economic tide of digital China, smart construction and internet plus, the company adheres to diversified business, leaps and bounds, and is willing to cooperate wholeheartedly with friends from all walks of life, work hand in hand, and strive to achieve the corporate mission of "adding value and creating value for you" and create a better future together!

China Railway Chang'an Heavy Industry Co., Ltd. is the only specialized company under China Railway 20th Bureau Group Corporation that specializes in high-end equipment manufacturing, steel structure industry, and strategic emerging business extension. It mainly engages in the research and development and manufacturing of high-end equipment such as new energy equipment, tunnel construction equipment, and special equipment, as well as innovative extension of steel structure engineering design, manufacturing and installation, overseas services, and emerging business sectors. The registered capital of the company is 300 million yuan, and there are currently 800 employees, including 450 professional and technical personnel. We have a production base of 303 acres in Yanliang District, Xi'an City, which includes nearly 100000 square meters of modern factories and 70 sets of large equipment.

The company has been engaged in manufacturing for more than 60 years. In 1991, it was the first company to obtain the production license of large-scale road rollers. The road roller products it produced won the title of "Top Ten Famous Brands of Road Roller in China", and it has the certification of "Three Standards" management system, the manufacturing license of mechanical parking equipment, the B-level license of bridge and gantry cranes and the production license of new sleepers. In terms of engineering construction, it has the special qualification certificate of steel structure manufacturing enterprise, the first-class qualification of steel structure engineering contracting, the second-class qualification of light steel structure engineering design, the third-class qualification of construction general contracting, the third-class qualification of petrochemical engineering general contracting and the qualification of construction labor. Obtained AAA certification from Shaanxi Enterprise Credit Association and AAA certification from China Industrial Cooperation Association, and was elected as the executive director of Shaanxi Enterprise Credit Association. The company has successfully passed the certification of "Specializing in Special Innovation" enterprises in Shaanxi Province and the fourth batch of "Little Giant" enterprises at the national level, and won the "Top 20 Scale Benefits of Non-industrial Sectors of China Railway Construction Third Class Company" for two consecutive years. 

By the end of 2021, the company won 53 scientific and technological awards. Among them, he won one national prize of "the first prize of the fourth national equipment management and technological innovation achievements"; 10 provincial and ministerial awards such as "Second Prize of Shaanxi Scientific and Technological Achievements", "First Prize of the Fifth Shaanxi Shimu Building Science and Technology Award" and "First Prize of the Seventh Shaanxi Green Building Industry Scientific and Technological Innovation Achievement Release"; 17 joint-stock company-level awards such as "the first prize of scientific and technological progress" and "the second prize of excellent QC team achievements in industrial manufacturing"; There are 25 group-level awards, such as "Special Award for Scientific and Technological Progress of Group Company" and "Advanced Unit for Economic and Technological Innovation". Obtained 79 national patents, including 6 invention patents, 4 design patents and 69 utility model patents; 1 outstanding invention patent award and 2 outstanding utility model awards of the joint-stock company; He also edited 1 national standard, 4 industry standards and 1 physical standard. 

The company won more than 241 comprehensive awards, including 56 collective awards and 185 individual awards. It has successively won 7 national awards such as "Advanced Female Workers Collective", "National May 1st Labor Model" and "Bronze Award in the Second National Construction Industry Finance and Taxation Knowledge Competition"; 20 provincial and ministerial awards such as "Top 100 Innovative Enterprises in China in 2021", "Advanced Team", "Model Workers in Shaanxi Province" and "Top Ten Outstanding Young Entrepreneurs"; There are 19 joint-stock company-level awards such as Top Ten Models of China Railway Construction, May 4th Red Flag Youth League Committee, Youth Civilization, Pioneer of Workers in 2020 and Advanced Individuals in Management: Four Good Leading Groups, Advanced Units in Trade Union Work, Advanced Grassroots Party Organizations, Five Good Parties Supporting the Capital, Labor Competition Contract Cup and Six Good Communist party member. The strength of the company is strong, and the scale is expanding. In the economic tide of digital China, smart construction and internet plus, the company adheres to diversified business, leaps and bounds, and is willing to cooperate wholeheartedly with friends from all walks of life, work hand in hand, and strive to achieve the corporate mission of "adding value and creating value for you" and create a better future together!

In terms of industrial manufacturing, the company has always placed technological innovation at the strategic center of its development. Through independent and joint efforts, it has concentrated its efforts on overcoming more than 20 "bottleneck" technological bottlenecks. Six high-end equipment items have created precedents such as "the first in the country" and "the first in Shaanxi". It has successively developed 45T, 55T, 65T, 75T series subway construction equipment (electric locomotive sets), gantry cranes, intelligent lining trolleys, inverted arch assembly machines, tunnel inverted arch piers, new energy (pure electric) "excavation, installation, transportation" and other high-end equipment, filling many domestic high-end equipment technology gaps. Especially in 2020, the first domestically developed electric slag removal equipment for new energy tunnel construction (electric excavator, electric loader, electric dump truck) became the first industrial manufacturing enterprise in China to assist in the construction of plain roads, tunnels, and high-altitude railways.

In terms of steel structure and steel bridges, the company adopts an integrated economic model of "design, manufacturing, and installation" to optimize the entire industry chain of steel structure engineering from design, manufacturing to installation, and create a technically strong and management leading steel structure and steel bridge team. At the same time, we will implement a horizontal and vertical border strategy that focuses on key provinces and cities, radiates across the country, and expands overseas. We will establish nearly 20 production bases in Europe, West China, Hubei, Gansu, Shanxi, Hebei, Yunnan, Chengdu and other places through independent and joint construction, with an annual output of over 500000 tons. Participated in multiple large-scale steel structure projects such as cross river bridges, cross river bridges, cross sea bridges, municipal steel bridges, airports, sports venues, factories, and anisotropic steel structure projects, and has won national and provincial honors multiple times.

In terms of innovative business, the company has deeply integrated into the national strategies of "carbon peak" and "carbon neutrality", adhering to the concept of "high-end intelligent manufacturing, green environmental protection, and integrity and win-win", taking accelerating the development of "two new" as a breakthrough point, using the "industry university research" collaborative innovation mechanism, further meeting market demand, strengthening technological innovation and product upgrading, and steadily enhancing core competitiveness. The first batch of domestic new energy "pure electric" high-altitude tunnel construction equipment "Tianlu Hao" developed by the company has been put into mass production, with a cumulative total operating time of "over 30000 hours+40000 kilometers", becoming the longest practical application time, highest altitude, and most reliable pure electric excavation, loading, and transportation equipment in China; The company focuses on segmented markets, supported by products and services, to increase market share and sales of series electric locomotive sets. Stably ranked among the top three in China, with the market share of electric locomotives above 65T ranking first in the country, providing more effective green power for national infrastructure construction.

In terms of logistics and trade, the company adheres to the concept of "creating value for customers" and implements a high-quality "7+(supply+, quality+, service+, supervision+, cost reduction+, emergency+) supply guarantee" system with the standard of "900% quality and quantity guarantee". We have customized material supply solutions for customers and have participated in more than 100 national key railways, highways, water conservancy, airports, etc., including Lanxin, Nankun, Baozhong, Neikun, Jiqing, Yujian, Xikang, Shuohuang, Heri, Changjing, Xihe, Yiwan, Qinghai Tibet, Xiangyu, Huanghanhou, Shanghai Kunming Passenger Dedicated Line, Xicheng Passenger Dedicated Line, Chenggui Passenger Dedicated Line, etc. Equipment and material supply tasks for municipal engineering construction. Overseas, we have successfully completed key construction projects and equipment and material supply tasks in Angola, Mozambique, Pakistan, Brazil, Thailand, Mongolia and other countries.