... )Used to prevent againest leakage4)Keep air clean5)All parts are under rigid quality control befor shipment6)Manufactured under ISO9001 standard.our ... of products,among them,we mainly engaged in auto parts.2) service(we sell):we doing business more than 6 years ... ,alternator, car horn,wipper, shock absorbers,control arm,auto items and etc.3) main markets:north America,south America,Eastern Europe ...