行程开关，YBLX-K3/20S/L 619- 上海临嘉科教仪器有限公司

p1Src=//y1shangxu.yzimgs.com/uploads/391770/20250116-28683173.jpg&p2Src=//y1shangxu.yzimgs.com/uploads/391770/20250116-90201640.jpg&p3Src=//y1shangxu.yzimgs.com/uploads/391770/20250116-38628428.jpg