In business for more than 40 years, Trenwa Inc. manufactures a range of precast concrete trench systems for several industries. Based in Ft. Thomas, Ky., the company offers its trench systems for the distribution of electrical control cables, power cables, mechanical piping and fiber optics. In addition, the firm manufactures a range of other precast products, including transformer pads, utility boxes and vaults. It serves utilities and industrial companies for facilities, such as substations, power plants, waste water treatment plants, wind farms, correctional institutions, universities, industrial plants, telecommunication sites and refineries across North America and in Puerto Rico.