Weifang Sunwin Chemicals Co., Ltd is a leading manufacturer about vitamin B in China, have own import and export right. Meanwhile, our company may produce goods according to customers request. Before several years ago, our regular products have always been up to the international standard. more important, we still try our best to improve the product for adapting the demand from market.

main products include niacin, nicotinamide, betaine hcl, betaine anhydrous, chromium nicotinate, chromium picolinate, methionine acid chelate etc.