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zhejiang Dunan Valve co.,Ltd is holder by Dunan holding Group, which is one of the largest manufacturer of brass valves in china, it is a vice director member of valve professional committee of china construction and metal configuration association and a member of china General valve association and china city gas association, based on the ISO9001:2000 and ISO14001:2004 certification approved, we have been pass International Certificate such as CE、KS、 DVGW、 KIWA and WRAS etc, we establish IQM general quality system, and obtained The state special Equipment Manufacturing Permit prior to other valve manufacturers, Dunan Valve is named as "well-known Brand of China Valve" "zhejiang Top Brand" and awarded as "pointed Production company"by water and wastewater sup-association of china Architecture&Hardware Structure.
Relying on the Holdings Group's strong economic capacity, based on the prominent management concept and system, advanced production equipments and keep-improving quality consciousness,the company founds the two valve brand" Dunan"and "Katong".
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