China 'GB/T 20634.4-2008
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 20634.4-2008
Non-impregnated densified laminated wood for electrical purposes - Part 4: Specifications for individual materials - Rings produced from birch veneer 电气用非浸渍致密层压木 第4部分:单项材料规范 由桦木薄片制成的环材
Issued Date:2008-12-30
Implemented Date:2010-01-01
Issued by:
The Standardization Administration of the People's Republic of China