Rongjia Shanghai Automation Technology Co., Ltd. is a commitment to high-quality sensor research and development, production, sales and service as one of professional manufacturers. The majority of mechanical equipment and automation companies supporting high-quality spare parts suppliers. The company has the most advanced production equipment, high-precision product testing and inspection equipment. All products assembled from imported components. Providing customers with high-quality sensor has good performance waterproof, anti-jamming, overload, short circuit protection and so on. Tel 1365192859 021-51021796