Product IntroductionVermiculite is a mineraloid of hydrated laminar magnesium-aluminum-ironsilicate. Its chemical composition greatly varies and chemical formation could be simplified as （ Mg.Fe..Fe.. ）3[(SiA)4O10][OH]24H2O. When heated to a temperature of about 850-950℃, it instantly expands (exfoliates) up to 15-25 times as water flashing into steam, maximum 30 times its original bulk volume. There is a color change during expansion from golden brown into silver white depending upon the composition of the vermiculite and temperature. With such prominent characteristics as being fireproof, heat insulating, sound and moisture absorbing, non-toxic, lightweight and disease free, it is widely used in construction, chemical industry, petroleum, electronics, light industry, environmental protection and as medium of agricultural chemical products etc.

Hebei Chida Manufacture and Trade Co., Ltd. was established in 2001. It is a group company integrating production, sales and research and development of industrial powder materials. The company has three wholly-owned factories and a research and development analysis center. Located in Shijiazhuang City, Hebei Province. The factory covers a total area of 200 mu, with a production capacity of 50,000 tons, more than 200 employees, and more than 20 years of experience in powder material processing. The research and development analysis center has complete testing equipment, which can conduct scientific and comprehensive analysis and evaluation of industrial mineral materials in many fields.