Licensed business items: Production and sales of: hazardous chemicals (operated according to the license period and business types); general items: production and sales: food additives (sodium hydroxide, hydrochloric acid); gas cylinder inspection (welding gas cylinders: liquid chlorine cylinders), mobile pressure vessel filling (low-pressure liquefied gas: liquid chlorine), gas cylinder filling (chlorine) (the above business items are operated according to the license period); technology and goods import and export; sales: chemical products (excluding hazardous chemicals), environmental protection Maintenance equipment, environmental protection products, electromechanical equipment, mechanical equipment, metal products (excluding rare precious metals), metal materials (excluding rare precious metals), building decoration materials (excluding hazardous chemicals and wood), electronic products (excluding electronic publications), electrical equipment, steel, instruments and meters, wires and cables, hardware, Jiaodian, plastic products, rubber products, paper products, automobile and motorcycle accessories, daily necessities, labor protection supplies, agricultural and sideline products, coal, coking coal; corporate management consulting; site rental. [Projects that require approval according to law can only be carried out with the approval of relevant departments]