2.2.1 PVC(polyvinyl chloride) 聚氯乙烯 2.2.2 BA(bright annealing pipe) 光亮低碳不锈钢管 2.2.3 EP(electro-polished pipe) 电化学抛光低碳不锈钢管 2.2.4 PP(polypropylene) 聚丙烯 2.2.5 PE(polyethylene) 聚乙烯 2.2.6 PVDF(polyvinylidenefluoride) 聚偏氟乙烯 |
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