binyew 发表于 2017-2-16 08:35:25

IEC 60893-3-4-2012 Insulating materials

IEC 60893-3-4-2012 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

admin 发表于 2017-2-18 08:30:25


谢谢您的分享,金币已奖励!

ygs67 发表于 2017-2-18 09:10:06

多谢分享！                        
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