If you haven't heard of LONGi and are tempted to dismiss this: they are in the top 10 PV module manufacturers in the world.[1]<p>For comparison here is NREL's chart of efficiency champions: [2]<p>1. <a href="https://en.wikipedia.org/wiki/List_of_photovoltaics_companies#Top_10_by_year" rel="nofollow noreferrer">https://en.wikipedia.org/wiki/List_of_photovoltaics_companie...</a><p>2. <a href="https://www.nrel.gov/pv/module-efficiency.html" rel="nofollow noreferrer">https://www.nrel.gov/pv/module-efficiency.html</a>