Rojana Industrial Park Public Company Limited, together with its subsidiaries, engages in the manufacture and sale of electricity from solar cell system in Thailand. The company operates through Real Estate Development and Related Service, Electricity Generating, Production and Distribution Industrial Water, Rental Services, and Medical Services segments. It also develops industrial estates in Ayutthaya, Rayong, and Chonburi Provinces; and provides water and wastewater treatment services. In addition, the company provides medical services; spices, aromatic, and drugs and pharmaceutical crops; consulting and advising services; and produces products from plants and animals for diseases treatment. The company was founded in 1988 and is headquartered in Bangkok, Thailand.