About ChangyuSealing As a nationalhigh-tech enterprise and national level "Specialized, special and new" key small giant enterprises, CHY consists of Laiyang ChangyuSealing Technology Co., LTD., Qingdao Changyu Sealing Co., LTD.,Shanghai Changyu New Energy Co., LTD., Sealing Technology Development Center for Qingdao University of Science and Technology.With more than 30 years experience in traditional vehicle oil seals , CHYisone of the main rubber seal bases in China, include research,manufacturing and sales. Since 2018, company stepped into new energy vehicle industrial and successfully introduced product to market, such as motor oil seal, battery pack seal, high-voltage AC busbar, plug connector DC busbar (EMI filter), battery disconnection unit, etc. At present, CHY has independently developed several automatic assembly lines for new energy products, and build 100,000-level dust-free workshop to achieve high productivity, quality as well as efficiency. High-voltage AC busbar solved the leakage between metal and plastic bycombining sealing ring and copper Busbar. In the high speed motor oil seal research and development, CHY successfully introduced oil sea products that can meet 25000 RPM forward rotation and 10000 RPM reverse rotation. This product adopts the unique sinusoidal curve design scheme, perfectly realizes balanced positive and negative rotation capacity. All above products have been in mass-production for GeneraMotor, Ford Motor Company, as well as Tier1. CHY has built robust recognition and trust based on high quality and excellent market service