JIAXING MINGRUI TECHNOLOGY is a manufacturer and exporter of air bumper jacks. Our air bumper jacks have brass air valves to provide accurate control when customers use them to lift and lower vehicles. The height is adjustable and it is easy to use the jacks. All of the products comply with international standards and are sold well at home and abroad. MINGRUI has the Certificates of CE, GS, TUV, ISO9001,...etc. It satisfied the demands all over the world.