1-High efficiency cells 2-Strong aluminum alloy frame 3-Standard tolerance (Guaranteed standard tolerance from -5~+5% ensures power output reliability) 4-Excellent weak light performance Excellent performance under low light environments (mornings, evenings, and cloudy days) 5-Withstand high wind and snow loads Entire module certified to withstand high wind loads (2400 Pascal) and snow loads (5400 Pascal) 6-Certificate: CE/ ROHS/ISO