GB/T 30921.2-2016工业用精对苯二甲酸(PTA)试验方法第2部分:金属含量的测定国家标准
英文:Test method of purified terephthalic acid (PTA) for industrial use—Part 2: Determination of metal content GB/T 30921....
英文:Test method of purified terephthalic acid (PTA) for industrial use—Part 2: Determination of metal content GB/T 30921....