新年产品 Sigma-Aldrich Sigma-A... 进口试剂采购网

p1Src=//y2.yzimgs.com/uploads/469100/2017226-184629601.jpg?watermark/2/text/5LiK5rW35ouc5Yqb55Sf54mp56eR5oqA5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/500/fill/I0E3QTlBOA==/gravity/SouthEast"

aa