19 August, 2020 During SNEC 2020, LONGi, the world leading solar technology company, was awarded the A++ Energy Yield Rating Label for desert climate conditions by TÜV Rheinland for the excellent power generation performance of its bifacial modules. The A++ label is the highest among the seven grades of TÜV Rheinland’s rankings and validates the outstanding performance of LONGi’s PERC bifacial modules in desert conditions.