7去氢胆固醇直销

===under info was translated buy computer===

Content:	90（％）
Effective substance content:	99（％）
Product specification:	25kg package
Executive standard:	Enterprise packaging
Main purpose:	Important intermediates in the synthesis of vitamin D3
CAS：	434-16-2
name:	tea polyphenols
Brand:	South arrow
model:	yc

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