Taishek fire proofing black rock wool board is specially designed for nontransparent curtain wall works. The appearance of the product is dark brown, it has the quality of high temperature endurance(melting point over 1150℃),extremely low linear shrinkage when exposed to soaking heat, good water repellance, good thermal insulation effect, do not corrode metal etc. The results of systematic test show that the fire endurance of this product exceeds 2 hours. So it is very suitable for the insulation works of curtain wall, the frame of doors and windows etc, which has a very strict demand for fire proofing.