But in the ceiling, whether we choose the asbestos board or choose the mineral wool board, usually hang with a screw rod, so that it can be more durable.
Asbestos fibers have been used for many years as have various animal fibers, especially wool, especially wool.
石棉纤维已经使用了很多年，它含有各种动物纤维，尤其是羊毛。
3
It is difficult to use rubber asbestos or stag wool as insulating material to meet the safety requirements in the blasting of removing high temperature clinker in metal furnace.