Tirathai Public Company Limited, together with its subsidiaries, manufactures, repairs, sells, and maintains transformer equipment in Thailand and internationally. The company offers power transformers for manufacturers and suppliers of electrical energy. It also provides various distribution transformers to reduce the voltage transmitted along the distribution system lines. In addition, the company offers special transformers, such as rectifier transformers, which are used in chemical industrial factories; induction furnace transformers that are used in metals smelting industry; and transformers using other insulators, such as silicone oil, etc. Further, it provides tanks and other equipment, including tank caps, heat sinks, clamps, etc.; and distributes, installs, and maintains electrical power equipment. Additionally, the company offers transformer erection and installation, oil filling, maintenance, modification and repair, and testing, as well as transformer rental services; and steel fabrication welding and custom metal work services. Tirathai Public Company Limited was incorporated in 1987 and is headquartered in Samut Prakan, Thailand.