Hardware products wholesale; Rubber products sales; Daily glass products sales; Sales of synthetic materials; Plastic products sales; Sales of electronic products; New material technology research and development. (Except for the items that need to be approved according to law, independently carry out business activities according to law with the business license), the permitted business items are: Import and export of goods; Technology import and export. (For projects subject to approval according to law, business activities can only be carried out after approval by relevant departments. Specific business projects shall be subject to approval documents or licenses of relevant departments. )