QTC Energy PCL engages in the manufacture of transformers. Its products include hermetically sealed oil type distribution, open type with conservator, on load tap changer, amorphous, dry type, pad-mounted, earthing, CSP-type, gas sealed, and power transformers. It operates through the Domestic and Export segments. The company was founded by Poonphiphat Tantanasin in July 19, 1996 and is headquartered in Bangkok, Thailand.