... fireproof and thermal insulation materials resistant to high temperature. Light magnesium carbonate with a basis of asbestos is high-quality isolation ... . And it also can be used to manufacture high-grade glass articles, magnesium salt, pigment, paint and chemicals for daily use, ... Carbonization, Brine, Limestone Carbonization, Soda Method, Ammonium Bicarbonate Method Reagent Grade Magnesium Carbonate