High quality mgco3 powder, being widely used in many industrial fields... Physicochemical Properties: White amorphous powder, nontoxic, odorless ... And it also can be used to manufacture high-grade glass articles, magnesium salt, pigment, paint and chemicals ... ulcer, etc. Processing Method:Brine, Soda Method, Ammonium Bicarbonate MethodExecutive standard:HG/T2959-2000Name of indexTest resultMagnesium ...