Production and sales of chlor-alkali; sales of sulfuric acid, hydrochloric acid, sodium hydroxide (flake caustic soda, granular caustic soda, solid caustic soda, liquid caustic soda), calcium hypochlorite, sodium hypochlorite, lime, high boilers (dichloroethane); road ordinary cargo transportation; production and sales of 1,4-butanediol, ethylene glycol, chemical products, solid mercury catalyst, cement and cement products, plastic products, calcium carbonate, sodium carbonate; sales of steel, building materials, livestock products, mechanical equipment, chemical products; planting industry, breeding industry, promotion of water-saving agricultural technology, research on water-saving agricultural engineering technology, import and export business, international freight forwarding agency business, property management, rail transportation on self-built railway sidings; loading, unloading and handling; technical consulting and service for testing equipment; machinery and equipment leasing services; processing and manufacturing of molds and spare parts; advertising design, production, publication and agency; warehousing services (excluding hazardous chemicals); domestic cargo transportation agency services; customs declaration and inspection agency services; computer software development and sales, information technology services and consulting, information system integration engineering, network comprehensive cabling engineering; sales, installation and maintenance of automation control systems and industrial monitoring facilities, website design, production and maintenance; agricultural planning and design, agricultural technology research and development and promotion, crop planting and sales, agricultural product processing and sales; engineering design, construction, contracting, technology transfer; thermal power generation, heat supply, sales of electricity and steam, electrical testing; vehicle leasing; catering services; sales of calcium carbide, coal and coal products; sales of mineral products and metal materials; enrollment auxiliary services