... , color-coated steel sandwich board, gypsum block, wire spatial grid structure perlite board, perlite porous board etc. It can widely be ... saving, lightweight, and environmental protectionPolyphenyl granule in Vanjoin board has good heat-insulation effect and heat lost ratio ... bricks, air bricks, color-coated steel sandwich boards, gypsum blocks, wire spatial grid structure perlite boards, and perlite ...