中華人民共和國國家標準
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 22921-2008
Paper and board - Determination of water vapour transmission rate of sheet materials - Dynamic sweep and static gas methods 紙和紙闆 薄頁材料水蒸氣透過率的測定 動态氣流法和靜态氣體法
Issued Date:2008-12-30
Implemented Date:2009-09-01
Issued by:
The Standardization Administration of the People's Republic of China