Licensed Projects: Special equipment manufacturing, Special equipment design, Installation, modification and repair of special equipment, Building intelligent system design, Construction Engineering Design, Food additive production( Projects that require approval according to law, Business activities can only be carried out within the validity period of the license after approval by relevant departments,The specific business items and license period are subject to the approval documents or licenses of relevant departments.) General Projects: oil refining、 Manufacturing of special equipment for chemical production, oil refining、 Sales of special equipment for chemical production, Emerging energy technology research and development, New energy prime mover equipment manufacturing, Energy Performance Contracting, Manufacturing of special equipment for environmental protection, Sales of special equipment for environmental protection, Dust removal technology equipment manufacturing, Coal-fired flue gas desulfurization and denitrification equipment manufacturing, Greenhouse gas emission control technology research and development, Greenhouse gas emission control equipment manufacturing, Sales of greenhouse gas emission control equipment, Resource recycling technology research and development, Wastewater treatment and recycling, gas、 Liquid separation and purification equipment manufacturing, gas、 Liquid separation and purification equipment sales, Refrigeration、 Air conditioning equipment manufacturing, Refrigeration、 Air conditioning equipment sales, Gas compression machinery manufacturing, Gas compression machinery sales, Pump and vacuum equipment sales, Instrument sales, Machinery and equipment sales, Machinery and equipment rental, Special equipment sales, Food additive sales, Basic chemical raw materials manufacturing( The manufacture of permitted chemicals such as hazardous chemicals is not required), Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion, New material technology research and development, Domestic trade agent, Software Development, Software Sales, Import and export of goods, General mechanical equipment installation services, Building materials sales, Metal material sales( Except for projects that require approval according to law, Carry out business activities independently in accordance with the law with a business license)