UL746E：聚合材料.印制线路板用工业层压板、丝绕管件、硫化纤维和材料
日期:2010-06-20 00:00
al, flammability, thermal, and other properties of the materials, that are intended to provide guidance to the material manufacturer, the fabricator, the end product manufacturer, safety engineers and other interested parties.
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08/27 05:38