1.Monocrystalline silicon 2.high efficiency to 18.4% 3.CE,ISO9001,ROHS certified ... servic 125mm monocrystalline solar cell with high efficiency, grade A,17.0-17.2% conversion efficientSpecification 125monocrystalline solar cell Model NumberHT-185WName: 125 ... SiN4 anti-reflection film, uniformity and beautiful appearance. GradeA Efficiency:17.0-17.2% 17.0-17.2% monocrystalline solar cell