1)Certifications: CE, IEC, TUV 2)Power range: 2WP to 310WP per panel 3)Monocrystalline and Polycrystalline relevant index: We have our own solar panel sub-factory and specialized in manufacture solar panel for years, we are Gold Supplier and Trustpass Supplier in the Alibaba.com. We can produce solar panels from the size 2 watts to 310 watts per piece, no matter mono crystalline or poly ...