DIN EN 61249-2-21-2004 印制板和其它互连结构用材料.第2-21部分:包被和非包被增强基材料.阻燃型铜包被的非卤代环氧编织E型玻璃纤维增强叠层板材(垂直燃烧试验)
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 (IEC