Wholesale and retail: Pre-packaged food and bulk food( frozen food); Import and export of goods and technology; small-scale border trade; Sale: medical devices, medical supplies, Disinfection supplies, cleaning supplies, Labor protection supplies, Daily necessities, mechanical and electrical equipment, metal materials, hardware, electrical appliances, mineral products, fresh aquatic products, fruits and vegetables, health food, meat, agricultural and livestock products。( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments)