MBB Half-Cell N-Type TOPCon Bifacial Double Glass Monocrystalline PV Module. SMBB technology reduces the distance between busbars and finger grid line for power increase. Anti-PID: ensured PID resistance through quality control of cell manufacturing process and raw materials. Better weak illumination response: more power output in haze, cloudy, and early morning conditions. Adapt to harsh outdoor environment: resistant to salt, ammonia, sand, high temperature and humidity. Bifacial technology: up to 25% additional power gain from back side depending on albedo. 15 years product warranty, 30 years output guarantee.