GB/T 15545-2020不定形耐火材料包装、标志、运输、储存和质量证明书的一般规定标准
英文:General rules for packing, marking, transport, storage and quality certificates of unshaped refractory GB/T 15545-202...
英文:General rules for packing, marking, transport, storage and quality certificates of unshaped refractory GB/T 15545-202...