We are manufacturing in China ,LIAOYANG TENGYUAN FOOD ADDITIVE FACTORY. We can supply followings raw material 1.copper gluconate2.Zinc gluconate 3.Ferrous gluconate 4.potassium gluconate5.Manganese gluconate 6.Magnesium gluconate 7.Nickel gluconate8. lithium gluconate 9.cobalt gluconate10.calcium gluconate11.Chromium Gluconate
