IEC 60893-3-4:2003
絕緣材料.電工用熱固性樹脂工業硬質層壓片.第3-4部分:專用材料規范.對酚醛樹脂硬質層壓片的要求
Insulating materials - Industrial rigid laminated sheets based on thermosetting resins for electrical purposes - Part 3-4: Specifications for individual materials; Requirements for rigid laminated sheets based on phenolic resins