Mal-PEG11-CH2CH2Mal,马来酰亚胺... 上海芃硕生物科技有限公司

p1Src=//y2.yzimgs.com/uploads/484807/20171221-17171823.png?watermark/2/text/5LiK5rW36IqD56GV55Sf54mp56eR5oqA5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/500/fill/I0E3QTlBOA==/gravity/SouthEast"