870158393 2009/09/25
[img]https://www.instrument.com.cn/bbs/images/affix.gif[/img][url=http://www.instrument.com.cn/bbs/download.asp?ID=172959]8[/url]
yilai1002 2009/09/26
[img]http://www.instrument.com.cn/bbs/images/affix.gif[/img][url=http://www.instrument.com.cn/bbs/download.asp?ID=173099]6 Anhydrides as antimycotic agents added to polyethylene films for food packaging[/url]