1. Hunan lehai environmental protection technology co., ltd (formerly known as Hunan Le Hai chemical special environmental protection equipment co., ltd), established on 20 15, is located in Changsha city, Hunan province, and is an enterprise mainly engaged in manufacturing special equipment. The business scope includes the design and development of environmental protection equipment; Wholesale of other mechanical equipment and electronic products; Sales of environmental protection equipment, energy-saving and environmental protection products and petrochemical equipment; Installation of petrochemical equipment; Manufacturing of special equipment for oil refining and chemical production and metallurgical equipment; Retail of hardware products; Electrical equipment services; Import and export of goods or technologies (except those prohibited by the state or involving administrative examination and approval).
2. Hunan Huasi Instrument Co., Ltd., founded on 20 14, is located in Changsha, Hunan Province, and is an enterprise focusing on research and experimental development. The business scope includes the manufacture of experimental analytical instruments; Intelligent instrument manufacturing; Instrument manufacturing; Optical instrument manufacturing; Industrial automatic control system equipment manufacturing; Manufacture of electronic components and electromechanical components; Metal processing machinery manufacturing; Pump and vacuum equipment manufacturing; IOT equipment manufacturing industry; Terminal test equipment manufacturing; Processing of mechanical parts and spare parts; Research and development of mechanical equipment; Development of valves and cocks; Development of artificial intelligence application software; Basic software development of artificial intelligence; Software development; Internet of things technology research and development; Hardware product development; Internet of things application services; Internet of things technical services; Sales of experimental analytical instruments; Instrument sales; Optical instrument sales; Mechanical equipment sales; Intelligent instrument sales; Internet of things equipment sales; Sales of mechanical parts and spare parts; Industrial automatic control system equipment sales; Sales of electronic components and electromechanical components; Sales of valves and cocks; Sales of pumps and vacuum equipment; Retail of hardware products; Wholesale of hardware products; Terminal test equipment sales; Engineering technology research and experimental development; Import and export of goods.
3. Hunan Zhongxian Intelligent Technology Co., Ltd., founded in 2020, is located in Changsha City, Hunan Province, and is an enterprise mainly engaged in the manufacture of special equipment. Business scope includes software development; Manufacturing of intelligent equipment, general instruments and meters, and special equipment for environmental protection; Mechanical and electrical equipment processing; Industrial design services; Information technology consulting services; Self-management and agency for the import and export of all kinds of goods and technologies, except those restricted or prohibited by the state; General mechanical equipment sales; Environmental protection technology promotion service; Special equipment maintenance and sales; Professional contracting of mechanical and electrical equipment installation engineering; Mechanical and electrical equipment installation services; Intelligent installation engineering services; R&D, installation, sales and service of automatic control system.
4. Hunan Xiangdong Chemical Machinery Co., Ltd., founded in 1980, located in Zhuzhou City, Hunan Province, is an enterprise mainly engaged in the manufacture of special equipment. The business scope includes the manufacturing and sales of oil refining equipment, chemical equipment (including spherical tanks), environmental protection equipment, tank cars, steam turbines, pumps, gas generators, pressure vessels and accessories, castings and forgings, tools, molds, cutters and industrial gases; Construction and installation of factory production facilities and equipment; Maintenance of tank trucks, pressure vessels (including steel cylinders and seamless gas cylinders), chemical machinery and gas appliance; Design of pressure vessel and tank car; Metal surface and heat treatment; Development of new patented products and new materials; Technical consultation and information service of chemical machinery; Catering and accommodation services; Sales of labor insurance supplies, measuring instruments, rubber products, industrial valves, general equipment accessories, building materials, calcium carbide, welding electrodes and liquefied gas; Asset leasing; Import and export business.