Yuhuan Korie Plastic Factory is specializesd in plastic check valve cores. With years of experience in the industry, it has introduced IS0900:2000 production management system. With strong technical force, advanced manufacturing technology and equipment, strict testing methods, professional focus. The production concept has been certified by ACS and WRAS, and passed the ROHS test of SGS certification body. Provide the best quality series of plastic check valve spools for domestic and foreign customers.