... Polycrystalline solar panels 1,Using high quality Motech solar cell. 2,Certificate: IEC,TUV, CE and RoHS LDK 230w Polycrystalline solar panelsMaterial: ... cartonKey Specifications/Special Features:270W solar panel, for 12V DC applications Made of multi-crystalline solar silicone cells Peak power: ... large or small on-grid or off- grid solar power station.2, Commercial and industrial building roof-top ...