These series modules consist of mono-crystalline high efficiency silicon cells, which are individually characterized and electronically matched before interconnection and laminated with toughened glass, EVA and Back-sheet of high quality. Assembled with anodized aluminum alloy frame, cable and junction box with MC4 connectors. These solar modules can be installed easily and work for a long period. The conversion efficiency is up to 22%. More than 20 years lifespan.