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1966:State-operated Qian wei meter factory had been founded.
1978:Start to research and develop Diaphragm gas meter.
1986:Cooperated with Kromschröder from Germany, and imported technology of diaphragm gas meter.
2001:Jointing venture company Qianwei Kromschröder Meters(Chongqing)Co.,ltd have been founded.
2009:The Qw//Krom company was moved to National Instruments industry-renowned brands demonstration zone in New North Zone of Chongqing.
2013:Enterprise engineering and technology research center of Chongqing smart gas metering had been settled in Qw//Krom.
2014:Gas meter automatic assembly line put into use.
2015:Wholly acquired Shanghai Kromschröder Meters Co., Ltd.
2020: Officially renamed Qianwei Meters (Chongqing) Co., Ltd.

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