the efficiency is above 17% , warranty is the power 90% in 10 years , 80% in 25 years . a grade ... -efficiency:A=+1,46mA, B=-79mV,Rp/p=0.435.Power specification at 1kw/m26.Output cable:Multi contact connectors7.Diodes ... glassb.Back:TPTc.Encapsulant:EVA9.Frame:Aluminum alloy solar panel module for solar system