Hangzhou Sannai, as the first researcher and manufacturer for polymer concrete of VE electrolytic tank / electrowinning cell in China,established in 1997,which covers 60,000 m2.It takes energy saving and environmental protection as its responsibility from beginning, and it aims to be a hi-tech company with innovative and leading technologies for metallurgy industries over the world.
Main products of Sannai are three categories:Polymer concrete of vinyl resin electrolytic / electrowinning cell/tank; anti-corrosive container / storge / buffer,which is suitable for all kinds of mediums,and  complete treatment equipment for waste gas( such as oxy-nitride and low concentration sulfur dioxide).
We are insisting in cooperating and developing with Wilhelmshaven University of Sciences application, Zhejiang University, Zhejiang industrial university, Zhejiang Science and Technology College, Elvee Company, Ruilin Company, Changsha Engineering and Research Institute of Non-ferrous Metallurgy and other institutes. At the same time,Sannai has developed and kept many independent innovation technologies.
Go far with devout mission and virtue in heart. The work of energy saving and environmental protection, as a human career, is not only a duty, but also an honor to us.