1.best quality 2.good price 3.supply ability is large 4.ISO 9001 and ISO 9002 certification tire valve1.Our products are 100% tested and are made of only the highest quality materials2.Our factory is one of top leading manufacturers in China.3.the other term can be negotiatedwe are the factory specialized in tire valve.our main type of tire valve are TR618,TR416,v3.20.6,v3.20.2H3,V3.20.6H,TR570 ...