China headquartered solar technology company, Longi has become the first to receive TÜV SÜD’s PID-p (Potential Induced Degradation - Polarization) certification for its Hi-MO 9 and Hi-MO X10 HPBC 2.0 modules. Certified under PPP 58234A:2025 and IEC TS 62804-1 Ed2 (DTS) standards, the modules demonstrated strong resistance to polarization-induced performance loss under voltage, temperature, and light stress. The tests confirmed LONGi’s advancements in minimizing PID-p effects, validating the modules’ reliability in real-world conditions.