Magnesium Carbonate Light 1>Appearance: white powder 2>MgO (%): 40%min 3>L. ... , lined with plastic bag inside.Application:1. Rubber: used as high-quality filler and reinforcement agent;2. Fireproof: as fireproof and thermal ... resistant to high temperature.3. Also used in paint, ink, pottery, glass, toothpaste, pigment, dately used product industry. high quality magnesium carbonate light 40 ...