BS EN 61249-2-21:2003 印制板和其他互联结构用材料.包被和非包被增强基材分规范集.阻燃型(垂直燃烧试验)铜包被的非卤化环氧编织E型玻璃纤维增强层压板材
Materials for printed boards and other interconnecting structures - Part 2-21:Reinforced base materials,clad and unclad - Non-halogenated epoxide woven E-glass reinforced laminated sheets of defined flammability (vertical burning test),copper-clad