Tianjin World Machinery Manufacture Co., Ltd. We are a leading company with 14 years' experience in manufacture and export of Butterfly Valve, Gate Valve, Check Valve, Globe Valve, Y-Strainer, Rubber Expansion Joint & Dismantling Joint. Our price is very competitive because we do parts process and painting ourself and casting factory is near us. We have passed through ISO9001:2008, CE. We also can supply you free samples for your evaluation. We also can supply you free samples for your evaluation. For more information, please visit our website www.worldvalves.cn If there is anything we can do for you, we shall be more than pleased to do so.