... : CE, TUV, IEC 4. 25 years warranty 230W polycrystalline solar panelEfficiency1. Low voltage-temperature coefficient allows higher power output at ... high-temperature condition.2. High efficient, high reliable solar cells ensure our product output stability.Benefits1. Manufactured in ... obtained under the Standard Test Conditions(STCs):1000W/m² solar irradiance, 1.5 Air Mass, and cell temperature of ...