• in 1964, began the first valve production

   • established in 1972, the company is a high and middle pressure valve manufacturer appointed by the Ministry of Machinery industry    • in 1990, received Anhui province quality management award    • in 1996, passed API certificate by the American petroleum institute    • April 1997, exported the first bitch power station valves to Pakistan    • in 1997,issued  the ISO9001 quality certificate by DNV    • in 1998, selected the large diameter bellow valves as the key national product   • in 2002, Huangshan brand forged steel valve were appraised as “Anhui famous brand product”

   • in 2003, passed AQSIQ pressure piping components manufacturing unit safety registration    • in 2007 bellows valve were appraised as Anhui famous brand product    • in 2008 received the TS certification    • in 2008, the company has certified as national high-tech enterprise    • in 2009, “Huangshan” brand valve was appoint as “Anhui famous brand”    • December 2009, passed the company environmental management system and occupational health and safety management system certification    • may 2010, the fully welded ball valve used for long transported pipeline was awarded as “national new-key products”    • june 2010, company was appointed as province technical center.    • December 2010, company was appointed as innovation enterprise of anhui province    • in 2011, honored as a “model enterprise with harmonious labor relationship in anhui province”    • in 2012, obtained the measurement and testing system certification for enterprises in anhui province    • in 2013, our company started the building of the second-phase new factory, which was put into use at the end of the year.    • In 2013,awarded as Huangshan city mayor quality prize    • in 2014, honored as a model unit of labor security in Anhui province