rubber products、 Rubber additives( Does not contain hazardous chemicals and monitored products) Production and sales, lubricating oil、 coal tar、 Sales and maintenance of biomass oil production equipment, Industrial and mining accessories、 office supplies、 Daily necessities、 Clothing, shoes and hats、 Sales of hardware and electrical appliances, Computer network technology development、 Technical Consulting、 Technology Transfer, Development and design of computer software and hardware, Self-operated or agency import and export business of the above commodities, Conference and exhibition services, Property Management, Cultural and artistic exchange event planning, Business Information Consulting。( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments)