General Projects: Machinery and equipment sales, Sales of special equipment for environmental protection, Manufacturing of special equipment for environmental protection, Special equipment repair, Sales of distribution switch control equipment, Engineering Management Services, New material technology research and development, General mechanical equipment installation services, Sales of solar thermal power generation products, Sales of air pollution monitoring and detection instruments, Sales of water pollutant monitoring and detection instruments, Sales of pneumatic power machinery and components, gas、 Liquid separation and purification equipment sales, Gas compression machinery sales, Import and export of goods,Chemical product sales( Does not contain permitted chemical products)。( In addition to licensing business, Able to independently operate projects that are not prohibited or restricted by laws and regulations)