1. Warranty: 5 years limited product warranty, 10 years at 90% of the minimal rated power output, 25 years at 80% of the minimal rated power output. 2. Certification: TUV, CE, ISO9001, ISO14001, Gold Sun certification 3. Features: Maximum Power Voltage-Vmp: 18 V Maximum Power Current-Imp: 2.22A Open Circuit Voltage-Voc: 22.5V Short Cricuit Current-Isc: 2.5A Cell Number & Size: 36 cells(62.5× 125) Cell Type: Mono crystalline & Poly crystalline Standard Test Condition: STC AM=1.5, 1000W/m*m, Cells Tempeeature: 25 centigrade 4. Service: Field installation and debugging guidance by professional engineer