Road cargo transportation (excluding dangerous goods), production of electric food processing equipment, installation and maintenance of gas burning appliances, and various engineering construction activities General projects: production and sales of: kitchen equipment, metal products, building materials, decorative materials (none of the above do not contain hazardous chemicals), Wujinjiaodian, ceramic supplies, office supplies, home appliances and furniture, hotel supplies, kitchen supplies, kitchen exhaust equipment, oil fume purification equipment; sewage treatment, air pollution control, professional cleaning, cleaning, disinfection services, wholesale of kitchenware, sanitary ware and daily sundries, professional design services, graphic design, disinfection Sales of protective equipment, manufacturing of models and teaching aids for teaching, sales of labor protection products, air pollution prevention and control services, water environment pollution prevention and control services, manufacturing of special equipment for environmental protection, sales of lighting equipment, sales of needle textiles, sales of plastic products, sales of daily necessities, sales of first-class medical devices, sales of toys, retail of kitchenware, sanitary ware and daily sundries, sales of refrigeration and air-conditioning equipment, sales of daily glass products, retail of clothing and apparel