Handmade sandwich panel made of glass magnesium rock wool, with high-quality color coated steel plate as the surface layer, galvanized steel strip as the edge sealing and reinforcing ribs, moisture-proof glass magnesium board as the core layer, and rock wool as the inner core layer. It is manufactured through processes such as pressure and heating, with good sealing performance and high fire rating. This product is easy and fast to install, with significant comprehensive benefits. Mainly used in electronics (industrial plants), pharmaceuticals (purification rooms), and chemical (fire prevention workshops).