Port operation; special equipment manufacturing; special equipment installation, modification and repair; road cargo transportation (excluding dangerous goods); road dangerous goods transportation; road cargo transportation (online freight); food sales; pharmaceutical retail; pharmaceutical wholesale; catering services; ship repair general items: mechanical equipment sales; special equipment sales; ship port services; loading and unloading; general cargo warehousing services (excluding Hazardous chemicals and other items requiring license approval); sales of mechanical parts and components; manufacturing of metal structures; sales of metal structures; general mechanical equipment installation services; household appliance installation services; general equipment manufacturing (excluding special equipment manufacturing); motor vehicle repair and maintenance; general equipment repair; special equipment repair; electrical equipment repair; steel rolling processing; electronic special equipment sales; electric power Sales of sub-components; sales of metal materials; sales of chemical products (excluding licensed chemical products); sales of building materials; retail of hardware products; sales of electronic products; ship modification; sales of marine engineering equipment; sales of water transportation equipment spare parts; sales of daily necessities; retail of clothing and apparel; retail of shoes and hats; sales of knitted textiles and raw materials; sales of knitted textiles; sales of first-class medical devices; Sales of Class II medical devices; retail sales of automobile spare parts; retail sale of motorcycles and spare parts; recycling of renewable resources (except productive scrap metal); import and export of goods; import and export of technology; import and export agency; domestic trade agency; domestic cargo transport agency; domestic container cargo transport agency; food sales (only sales of prepackaged food); purchase and sale of real estate Chinese herbal medicine (excluding traditional Chinese medicine pieces); ship towing services