接近开关SC-2020A哪里有销售
上海临嘉科教仪器有限公司
p1Src=//y1.yzimgs.com/uploads/391770/20171025-41825419.jpg&p2Src=//y1.yzimgs.com/uploads/391770/20171025-12847742.jpg&p3Src=//y1.yzimgs.com/uploads/391770/20171025-24847742.jpg