尼龙膜，13×20 cm 上海钰博生物科技有限公司

p1Src=//y2.yzimgs.com/uploads/495331/2017614-15345105.jpg?watermark/2/text/5LiK5rW36ZKw5Y2a55Sf54mp56eR5oqA5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/300/fill/I0E3QTlBOA==/gravity/SouthEast