Sunwin Chemicals ,including Weifang Sunwin and Shanghai Sunwin with the former being the manufacturing site and the latter being the center for international trade , have been manufacturing fodder and food additive for decades.
Currently we can produce three series of products : betaine series (betaine hydrochloride,betaine anhydrous,betaine citrate),pyridine derivatives (3-pyridine acetic acid , 2-chloro-4-nitropyridine ,niacin, nicotinamide) and organic chelates( chromium picolinate,zinc citrate) .