活性酯PEG巯基，HS-PEG-NHS PS2-... 上海芃圣生物科技有限公司

p1Src=//y1.yzimgs.com/uploads/505571/2019412-101941449.png?watermark/2/text/5LiK5rW36IqD5Zyj55Sf54mp56eR5oqA5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/700/fill/I0E3QTlBOA==/gravity/SouthEast"