There are 824 magnesium carbonate food grade suppliers, mainly located in asia. the top supplying countries are china (mainland), india, and united states, which supply 91%, 4%, and 2% of magnesium carbonate food grade respectively. magnesium carbonate food grade products are most popular in domestic market, north america, and africa. Osian marine chemicals, leading supplier & manufacturer of light magnesium carbonate-cattle feed grade. our magnesium carbonate is used in cattle feed as magnesium nutritional supplement especially for the dairy cattle which can produce high yield of milk. There are 1,212 food grade magnesium carbonate suppliers, mainly located in asia. the top supplying countries or regions are united states, china, and india, which supply 1%, 92%, and 3% of food grade magnesium carbonate respectively. Magnesium carbonate usp bp ip fcc food grade manufacturers. anmol chemicals group, established in 1976, is the pioneer manufacturer of specialty chemicals, pharmaceutical excipients, fragrance & flavor chemicals in india.