General items: import and export of goods; Technology import and export; Research and development of bio-based materials technology; Sales of bio-based materials; Manufacturing of bio-based materials; Research and development of bio-based materials polymerization technology; New material technology promotion service; New material technology research and development; Sales of plastic products; Manufacture of plastic products. (Except for the items that must be approved according to law, business activities shall be independently carried out according to law with the business license) Licensed items: production of plastic packaging containers and tools for food; Packaging and decoration printing. (For projects subject to approval according to law, business activities can only be carried out after the approval of relevant departments. The specific business projects shall be subject to the approval documents or licenses of relevant departments.)