Laizhou Baoande Fire-proof Board Co., Ltd., a joint venture invested by Laizhou Xiangyun Firer-proof Heat Insulation Materials Co., Ltd. we specializes in R&D, manufacturing and distribution of high-temperature-resistance calcium silicate board with annual output of 80,000 sq. M, ranking the lead in similar fire shutter manufacturers in Asia-Pacific region. Thanks to sophisticated technologies of Canada, China Building Materials Science Research Institute and Sichuan Fire Control Science Research Institute affiliated to Ministry of Public Security, the company has developed high-temperature-resistance calcium silicate board, high-temperature- resistance calcium silicate core for fireproof door (including core for steel door, wood door, HD calcium silicate fireproof board, semi-finished door), acquiring over ten patents.