Ningbo mingrui zhongxing electronic technology co., LTD is a national high-tech enterprise which is committed to the research and development and manufacturing of sensors, centralized lubrication and various controllers.The main products are all kinds of liquid level sensor, a non-contact sensors, proximity sensor, oil/water tank car sensor, flow sensor, photoelectric sensor, lubricating oil pump controller, automobile chassis lubrication controller, air/air purification controller, etc., products are widely