Our Service Samples, OEM and ODM, Warranty and After-Sale Service: * Welcome solar system Sample Test; * OEM & ODM is welcomed; * Warranty: 1 Year; * After-Sale Service: 24 Hour-Hot Line for Consultancy and Technical Support How To Ask for Support if products broken in warranty? 1. email us about PI number, Product number, most importantly, is the description of broken products, to the best, show us more detailed pictures or video; 2. we will submit your case to our after sales department; 3.Usually within 24 hours, we will email you the best solutions.