Both LID(Light Induced Degradation) and PID(Potential Induced Degradation) are strictly eliminated to ensure higher actual yield during lifetime. Tempered glass and reinforced frame design withstand rigorous weather conditions such as heavy snow and strong wind. Global brand with powerful financial strength provide reliable 25-year warranty. Various tests under harsh environmental conditions such as ammonia and salt-mist passed. Hyundai’s R&D center is an accredited test laboratory of both UL and VDE.