Teera-Mongkol Industry Public Company Limited, together with its subsidiaries, manufactures and distributes electrical equipment in Thailand. The company offers ballasts, LED lamps, LED bulbs and tubes, solar cells, ultraviolet lamps, and fluorescent lamps, as well as gear boxes. It also manufactures sodium and metal halide lamps, and transformers. In addition, the company engages in the generation and sell of electricity. It also exports its products. The company was incorporated in 2000 and is based in Samut Sakhon, Thailand.