Manufacturing and processing of vehicle accessories, lighting fixtures, mechanical components, hardware accessories, electrical accessories, mufflers, and electric vehicles; sales of steel, aluminum, building materials, decoration materials, and chemical raw materials (excluding dangerous goods); self-operated and agency import and export of various commodities and technologies, except those restricted or prohibited by the state. Textile processing of fabrics; manufacturing of industrial textiles; sales of industrial textiles; production of daily masks (non-medical); sales of daily masks (non-medical); production of medical masks; retail of medical masks.