Materials for printed boards and other interconnecting structures - Part 3-4: Sectional specification set for unreinforced base materials, clad and unclad (intended for flexible printed boards); adhesive coated flexible polyimide film (IEC 61249-3-4:1999); German version EN 61249-3-4:1999
印制板和其他互连结构用材料.第3-4部分:覆层和非覆层(用于柔性印制板)无增强基材分规范集;涂有粘合剂的柔性聚酰亚胺薄膜(IEC 61249-3-4-1999);德文版EN 61249-3-4:1999