中华人民共和国国家标准
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 9639.1-2008
Plastics film and sheeting - Determination of impact resistance by the free-falling dart methord - Part 1: Staircase methords 塑料薄膜和薄片 抗冲击性能试验方法 自由落镖法 第1部分:梯级法
Issued Date:2008-08-19
Implemented Date:2009-05-01
Issued by:
The Standardization Administration of the People's Republic of China