10 May, 2021 LONGi has once again received recognition at the 2021 edition of the TÜV Rheinland “All Quality Matters” Solar Congress, with its Hi-MO 4 and Hi-MO 5 high-efficiency modules winning awards for PV Module Outdoor Energy Yield (Monofacial Group) and PV Module Energy Yield Simulation (Bifacial monocrystalline group) respectively.