https://www.statista.com/chart/1576/chinese-solar-photovolta...
Despite that dominance, prices continue to fall:
https://ourworldindata.org/grapher/solar-pv-prices
As an addendum, the US also saw a rapid increase in domestic solar panel manufacturing in recent years:
https://seia.org/news/american-solar-panel-manufacturing-cap...
But that was due to government incentives that are now under fire from the Trump administration.