General business items: gas、 Liquid separation and purification equipment manufacturing; gas、 Liquid separation and purification equipment sales; Ecological and environmental material manufacturing; Sales of ecological and environmental materials; Fishing machinery sales; Fishing machinery services; Fishery machinery manufacturing; Agriculture、 Forest、 Mu、 vice、 Sales of specialized fishing machinery; Agricultural, forestry, animal husbandry and fishery machinery parts manufacturing; Installation of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery、 repair; Fishery professions and auxiliary activities; General equipment manufacturing( Excluding special equipment manufacturing); Manufacturing of equipment for marine aquaculture and utilization of marine biological resources; Hardware product manufacturing; Import and export of goods; Technology import and export; General mechanical equipment installation services; Sales of special equipment for environmental protection; General equipment repair; Manufacturing of ecological environment monitoring and testing instruments; Manufacturing of special instruments for agriculture, forestry, animal husbandry and fishery; Industrial automatic control system device manufacturing; Mobile communication equipment manufacturing; Marine engineering equipment manufacturing; Mechanical equipment research and development; Livestock and fishery feed sales; Biofeed R&D; New material technology research and development;Valve and plug development; Biopesticide technology research and development; Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion; Research and development of bio-based material polymerization technology; Trade Brokerage; Domestic trade agent; Fishing supplies sales; Sales of agricultural, forestry, animal husbandry and fishery machinery parts; Fishing gear sales; Fishing gear manufacturing; Information technology consulting services; Tree planting and management( General business items within the business scope are independently carried out in accordance with the law, Through the National Enterprise Credit Information Publicity System( Hainan) Public disclosure to the public)