Tianjin Tanggu Valve Plant was established in 1956. For short is TVT, has 860 employees among 127 middle and advanced techinicians and engineers and has a lot of large and middle machines including 129 sets of manufacturing equipments and 28 sets of performance testing ways. It passed NorwaysISO 9001 international quality system certification, ISO9001(correcting certification of 2000). Our company comes to superior levels of design&development , manufacture and testing.