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Wuhan Fengfan Chemical/Trading Co., Ltd
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1. Stannous chloride / stannous sulphate/ sodium stannate
2. Stannous pyrophosphate
3. O-chlorobenzaldehyde (OCBA)
4. Benzylidene acetone
5. Sodium dichromate
6. Potassium dichromate
7. Rochelle salt
8. Black emery or black aluminium
9. Chromic acid
10. Cobaltous sulfate / cobaltous chloride/ cobaltous acetate
11. Potassium pyrophosphate
12. Copper pyrophosphate
13. Zinc chloride
14. 1.4-butynediol (BOZ)
15. Sodium gluconate
16. Metane sulfonic acid
17. Lead methane sulfonate
18. Tin methane sulfonate
19. Sodium selenite
20. Sodium fluoride
21. Sodium bifluoride
22. Phytic acid 50%, 70%
23. Zinc powder
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