ZHEJIANG TOSVAL INDUSTRY CO., LTD guzobere na 1980s mgbe ọgbọ mbụ malitere site na aha ya bụ Yuhuan Tongxing Valve Co., Ltd, Ngwaahịa anyị bụ isi gụnyere ọtụtụ puku nkọwa akọwapụtara karịa usoro 20 nke gụnyere brass ball valve, Water Meter Valves , Gas gas valve and angle valve, bibcock na pipe fittings, wdg anyị ikike mmepụta kwa afọ bụ ihe dị ka nde 50 PC.