Mold design; technical development and sales of plastic products, digital Bluetooth casings, electronic spare parts, small household appliances, sports equipment, and beauty equipment products; domestic trade; import and export of goods and technology. (Except for items prohibited by laws, administrative regulations, and decisions of the State Council, restricted items must obtain a license before they can be operated) Mold making; technological development, production and sales of medical devices; production of plastic products, digital Bluetooth shells, electronic spare parts, small household appliances, sports equipment, and beauty equipment products.