What are the considerations behind Japanese listed companies promoting billion dollar perovskite cell projects? "At the critical moment when global new energy analysts are guarding the" turning point "of the photovoltaic industry, new expansion news has come from this industry. Japanese chemical company Sekisui Chemical announced this week that it will jointly invest with the Japan Development Bank in large-scale production of flexible perovskite solar cells. The project investment will reach 314.5 billion yen (approximately 14.5 billion yuan), of which half will be covered by government subsidies.