久草国产久草视频|中文字幕免费网站|久久五月天激情网|中文字幕插入国产|美女裸体中文网站|丁香五月婷婷五月|丁香五月开心色播在线播放国产三级|黄网在线观看人在|国产成人综合亚洲欧美丁香花|久久超碰色色AV


Vitamin D2

【Name】 : Vitamin D2 
【Structural formula】

【Molecular formula】: C28H44O
【CAS code】: 50-14-6 
【Properties】: Colorless needle crystal or white crystal powder, odorless and tasteless, Contact with air and water is easy to deteriorate.
【Package】: Medicinal composite membrane, Aluminum can and Carton.


Shandong Guangtongbao Pharmaceuticals Co., Ltd.
No.3107 Dongjing Road, Economy Development District, Qingzhou City,262500,Shandong,China
Tel:0086 536 3223585
Fax:0086 536 3235805
E-mail:gtchlorophyll@163.com






?