Qingdao Comay Electronics Co., Ltd

The main business of SANY Group is the equipment manufacturing industry with engineering as the theme. The main products are concrete machinery, digging machinery, lifting machinery, road construction machinery, piling machinery, wind power equipment, port machinery, petroleum equipment, coal equipment, precision machine tools and other whole series of products, including digging machinery, piling machinery, caterpillar, lifting machinery, moving port machinery, road machinery. Coal tunneling machinery for China's mainstream brand; Concrete machinery for the global brand.

Weichai, founded in 1946. It's an international company with cross-field and cross-industry operation. It has power systems, commercial vehicles, agricultural equipment, construction machinery, intelligent logistics, marine transportation equipment and other business segments all over the world. Its subsidiaries spread throughout Europe, North America, Asia and other regions, and its products are exported to more than 110 countries and regions. In 2021, its revenue will exceed 300 billion YUAN, ranking 77th among China's Top 500 enterprises, 23rd among China's Top 500 Manufacturers and 1st among China's Top 100 enterprises in machinery industry.

Guangxi Liugong Machinery Co., Ltd. is a core subsidiary of Guangxi Liugong Group Co., Ltd. Through continuous effort and innovation, starting with the introduction of the first modern wheel loader in 1966, Liugong now has grown into a mining machinery, shoveling transport machinery, lifting machinery, industrial vehicles, compaction machinery, road construction and maintenance machinery, concrete machinery, pile driving machinery, aerial work machinery, mining equipment, steel bar and prestressed machinery, compressor, economic crops mechanized equipment, pneumatic tools, engineering machinery accessories and other products.

Founded in 1992, Zoomlion is mainly engaged in the R&D and manufacturing of construction machinery, agricultural machinery and other high-tech equipment. Its leading products cover 11 categories, 70 product series and nearly 600 varieties. Zoomlion ranks among the top 5 construction machinery enterprises in the world. It is s a collection of construction machinery, agricultural machinery and new building materials of high-tech equipment manufacturing enterprises.