Dry powder insulation mortar produced by vitrify micro beads material, have excellent insulation and fire proof heat resistant properties, never crack whith high strength.
Heat resistant glass was invented in Germany at the end of the 19th century, but was used mostly in lanterns and in jars to hold telegraph and telephone batteries.
干粉
温砂
。
有
混合物极其稳定而且
热。
用于灯笼和盛放电报、电话电池的罐子。
