Building materials, steel, ferrous materials, iron powder, common non-ferrous materials, chemical products (excluding hazardous chemicals), hardware products, textiles, daily necessities, instruments and meters, auto parts, general and special equipment accessories, plastic products, office supplies, computers and auxiliary equipment, electronic products, clothing, shoes and hats, furniture, paper products, medical supplies and equipment, disinfection supplies, sanitary supplies Wholesale and retail of rubber products; Energy saving technology promotion services; Application software development; Support software development; Basic software development; Environmental protection and governance consulting services; Environmental protection monitoring; Groundwater pollution control services; Engineering technical consulting services; Import and export of goods; Food business * * *