The trademark classification system is divided according to the specific fields and characteristics of goods or services to facilitate trademark application and management. The following are the trademark classifications for 2021:

1. Category 1: chemical raw materials, chemical preparations, chemicals and their intermediates, pesticides and their intermediates, pharmaceutical intermediates, biological products, cosmetics, disinfection agents, detergents, etc.

2. The second category: color binders, adhesives, fillers, printing inks, etc.

3. The third category: coatings, paints, varnishes, waterproof paints, etc.

4. Category 4: industrial oil, pump oil, tool oil, automation lubricating oil, etc.

5. Category 5: medical equipment, medical supplies, sports equipment, game equipment, etc.

6. Category 6: Metal materials, metal products, metal parts, machine repair auxiliary materials, etc.

7. Category 7: Mechanical equipment, electronic equipment, electrical equipment, optical instruments, calculators, computers, sound recording and processing equipment, etc.

8. Category 8: transportation equipment, vehicle equipment, bicycles, motorcycles, tires, etc.

9. Category 9: communication equipment, mobile phones and their accessories, televisions, players, etc.

10. Category 10: Food, beverages, candies, chocolate, coffee, tea, condiments, etc.

11. Category 11: Household appliances, furniture, lighting equipment, household appliances, etc.

12. Category 12: Textiles, bedding, clothing, shoes and hats, knitwear, Taobao women's clothing, etc.

13. Category 13: Carpets, towels, cloth, paper, office supplies, stationery, etc.

14. Category 14: Jewelry, watches, precious metals, gemstones, cosmetics, etc.

15. Category 15: scissors, knives, razors, ironwork, ceramics, glass, etc.

These classifications are for reference only. Actual trademark applications need to be selected based on specific circumstances.