GB/T 20633.3-2011

Coatings for loaded printed wire boards (conformal coatings) - Part 3：Coatings for general purpose (Class 1), high reliability (Class 2) and aerospace(Class 3)

承载印制电路板用涂料(敷形涂料) 第3部分：一般用(1级)、高可靠性用(2级)和航空航天用(3级)涂料