双凹透镜 BK7 / SLB-12.7B-20NM 深圳电商商业股份有限公司

p1Src=//y1.yzimgs.com/uploads/436066/2023912-17832760.jpg?watermark/2/text/5rex5Zyz55S15ZWG5ZWG5Lia6IKh5Lu95pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/700/fill/I0E3QTlBOA==/gravity/SouthEast