[2006] Visit to Germany biogas plant

[2006] Visit to Swiss wastewater treatment facility

[2006] Presentation of Korea type biogas plant to Korean officers

[2011] Installation of hybrid streetlamp in Korea

[2017] Design of CHP project in Indonesia

[2011] Export of solar lighting system to Indonesia

[2009] Indonesia LFG field survey

[2010] Vietnam alternative energy project field test

[2011] Vietnam solar lighting system field survey