Hebei Bo Run-de calcium silicate board production Ltd. 6,800,000 m2, annual production of mineral wool acoustic board 4,200,000 m2, annual production of 5,000,000 keel. Hebei Building Materials Co., Ltd. Production Run-de Bo Bo Run-de calcium silicate board, Bo Run-de fiber cement board as a new type of environmental pressure on building materials...　　【MORE】