Freight operations; Medical device production; Medical device operations。 manufacture、 Processing、 Sale: synthetic materials( No hazardous chemicals), Bio-based materials, Chemical raw materials( No hazardous chemicals), Chemical products( No hazardous chemicals), synthetic fiber, Graphite and carbon products, Environmental protection equipment, Carbon fiber composite material processing equipment, non-woven fabrics, meltblown cloth, Polypropylene products。 Seawater desalination, Machinery and equipment rental, Warehousing services; Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion; Enterprise Management Consulting、 Economic Information Consulting。 Sale: diesel fuel( No hazardous chemicals), Nanomaterials。 Import and export of goods or technology( Except for the import and export of goods and technologies that are prohibited by the state or involve administrative approval)。( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments)