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Jun. 1967 | DENRYO CO., LTD. was established and specialized in selling measurement machines. | |
| Jun. 1976 | Mobile radio was released. | ||
| May. 1987 | Photovoltaic modules were released. | ||
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Feb. 1992 | Charge controllers for off-grid PV systems were released. | |
| Sep. 1992 | DC-AC power inverters were released. | ||
| Nov. 1993 | Deep cycle lead acid battery was released. | ||
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Jun. 1994 | Battery charger was released. | |
| Feb. 2008 |
Exhibited at PV EXPO 2008 Tokyo and since then have continued to exhibite at PV EXPO every year. |
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| Jul. 2009 | The Development Division was established. | ||
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Dec. 2009 | Original multiple voltage battery charger, PANcharge 1k, has been released. | |
| Aug. 2010 | Original charge controller, SolarAmp mini, has been released. | ||
| Oct. 2011 |
Exhibited at IGEM2011 in Malaysia and since then have continued to exhibite at IGEM every year till 2013. |
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Jun. 2012 | Exhibited at Entech Pollutec Asia 2012 inThailand. | |
| Feb. 2013 | SolarAmp mini was awarded the Arakawa New Product & Technology Grand Prize. | ||
| Feb. 2013 | Original solar charge controller, SolarAmp B, has been announced at the exhibition. | ||
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Apr. 2013 | Original solar charge controller, SolarAmp B, has been released. | |
| May. 2013 | Exhibited at AFRICAN FAIR2013. | ||
| Sep. 2013 | Exhibited at REI2013 in India. | ||
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Oct. 2014 | Exhibited at All-Energy Australia 2014. | |
| Oct. 2015 | Exhibited at INTELEC2015 in Osaka. | ||
| Nov. 2016 | DENRYO BATTERY was released. | ||
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Mar. 2017 | Original DC-AC power inverter, DIASINE®, has been announced at the exhibition. | |
| Aug. 2017 | Original DC-AC power inverter, DIASINE®, has been released. | ||
| Feb. 2019 | Original charge controller, SolarAmp BG, has been announced at the exhibition. | ||
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Jun. 2019 | Original charge controller, SolarAmp BG, has been released. | |
| Oct. 2019 | Exhibited at 17th Solar Bangladesh 2019 International Expo. | ||
| Dec. 2019 | Heavy Salt Damage Resistance photovoltaic module DBG012-24, has been released. | ||
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Mar. 2020 | Heavy Salt Damage Resistance photovoltaic module DBG100-12, has been released. | |