GB 4693-1984.The rules of examination of lea ther for acceptance. GB 4693适用于各种皮革成品的验收。 1皮革成品在入库前,应按照...
GB 4693-1984 皮革成品验收规则
GB 4693-1984.The rules of examination of leather for acceptance. GB 4693适用j'各种皮革成品的验收。 1皮单成品在入库前,应按照...