GB/T 5591.1-2017 Translated English of Chinese Standard. (GBT 5591.1-2017, GB/T5591.1-2017, GBT5591.1-2017): Combined flexible materials for electrical insulation - Part 1: Definitions and general requirements [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]