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zhejiang guangyi optical energy technologies co.ltd,is specialized in solar energy development and utilization of new high-tech enterprises. The company mainly produces solar panel/solar module all kinds of including monocrystalline and polycrystallinefrom 5W to 280W,also produce solar energy street lamp and solar controller .we service OEM ,we can offer the certification of IEC,TUV, CE,Uland ISO.