1. Chemical raw materials 2. Pigments and paints 3. Daily chemical products 4. Fuel oils and fats 5. Medicine and health care

6. Metal materials 7. Machinery and equipment 8. Handmade tools 9. Science Instruments 10. Medical equipment

11. Electrical devices 12. Transportation 13. Arms and fireworks 14. Jewelry and clocks 15. Various musical instruments

16. Office supplies 17. Rubber products 18. Leather furniture 19. Building materials 20. Home decoration

21. Household appliances 22. Rope mesh bag awning 23. Textile yarn 24. Fabric bedding 25. Clothing, shoes and hats

26 .Buttons and zippers 27. Carpets and mats 28. Entertainment equipment 29. Meat, fish, eggs and milk 30. Convenience food

31. Plant seeds 32. Beer drinks 33. Alcoholic beverages 34. Tobacco smoking sets 35. Advertising Sales

36. Financial real estate 37. Installation and maintenance 38. Communication services 39. Transportation and storage 40. Material processing

41. Education and entertainment 42. Technical services 43. Catering and accommodation 44. Medical care Gardening 45. Social Services

This is a rough classification for your reference. The specific products will depend on your study and practice~