The beam of prefab house:1 low price ,good quality, elegant , good apperance, bright color ,fireprotect , waterprotect,can stand The beam of prefab house:1 low price ,good quality, elegant , good apperance, bright color ,fireprotect , waterprotect,can stand more than 10 2 easy transport, fast shipment, assemble and dissamble quiklyflat surface and art decoration1 Fireproofing level :A12 ...