Characteristics of rock wool board 1. Appearance quality: The surface is flat, and there must be no scratches or stains that impede practical use. 2. Combustion performance: non-combustible. 3. Thermal load shrinkage temperature: 643 degrees. 4. Hygroscopicity: 3.9%. 5. Organic matter content: 2.9%. Bridge Faucets,bridge kitchen faucet,Bridge Faucets price Yuyao Zelin Sanitary Ware Co., Ltd , https://www.zelinfaucet.com
Characteristics of rock wool board