Wholesale and retail: Pre-packaged food, bulk food (with license), grain, vegetables, poultry eggs, raw meat, fresh aquatic products, office supplies, daily necessities, washing supplies, electronic products; Import and export of goods and technologies (except for items prohibited by national laws and administrative regulations); Commercial services. Except for those limited by administrative regulations that require permission to operate, laws, (for projects that require approval according to law, business activities can only be carried out with the approval of relevant departments)