1.solar panel from yantaishanyou,China 2.export to Europe,Spain,Australia,Korea,Indonesia,Japan and so on 3.long time warranty solar cell from yantaishanyou in chinabrand name sy Open Circuit Voltage (Voc): 21.2VShort Circuit Current: 0.59A Max. System Voltage:715VDCWorking Temperature:-40 to +85Quantity of Cell:4(2X2)Size Of Module(mm):337X288X28Weight:1.4kg