DIN ISO 20369 E:2011-09 草案 用于生產(chǎn)香煙過濾嘴、香煙和其他煙草制品包裝的材料 檸檬酸鹽含量的測定(ISO 20369:2009)
Draft Document - Material used for producing wrappings for cigarette filters, cigarettes and other tobacco products - Determination of citrate content (ISO 20369:2009)