... Solar PanelWe adopt high transparent low iron, tempered glass and self-supporting solar cells in order to improve conversion efficiency ... mechanical loads.We have got TUV,UL,MCS,CE,ROHS and Golden Sun certificate for our products, ISO9001 certificate for quality management ... the integral performance of system and solar panel life span.-TUV,UL,MCS,CE,ROHS,Golden Sun certified-Underwriting of 25years ...