Tirathai Public Co., Ltd. engages in the manufacture, repair, and maintenance services of transformer equipment and general custom metal work service. Its products include power, distribution and special transformers. The firm also offers erection and installation of transformers, oil filling services, maintenance services, modification and repairs services, testing services, and equipment rental services. It operates through the Domestic and Foreign segments. The company was founded on August 20, 1987 and is headquartered in Samutprakarn, Thailand.