Norsk

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2000
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Hongsheng Pipe Valve Factory was established
2006
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COVNA was established
2007
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Hong Kong COVNA
2008
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Established a team
2013
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Certifications & Patents
2015
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Ningbo COVNA
2017
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Won the title of Chinese high-tech enterprise
2017
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COVNA Industry Salons & Valve Exhibition
2018
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COVNA magazine published
2018
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Wenzhou COVNA established
2018
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Charity Events & Hope Primary School
2019
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New Office & Tony Division
2020
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US COVNA Division Was Established
2021
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Stark Division re-established
logo

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