タイトルまたは説明

asbestos is a natural fibrous siliceous minerals to collectively, is a kind of silicate minerals are widely used in building materials fire prevention board fiber, also is the only natural mineral fiber, it has good tensile strength and good thermal insulation and anticorrosive, not easy combustion, it is widely used. Many different kinds of asbestos, is the most common three kinds of chrysotile asbestos (white), iron (brown asbestos) and crocidolite (blue asbestos), of which the most abundant chrysotile content, USES the most popular.