Ackerstone Industries manufactures advanced environmental and construction products, which are marketed throughout the country. In addition, the company manufactures a range of concrete piping and related accessories, including manholes for drainage and sewage, security and pedestrian subways. Its specialty products include box culvert pipes, drainage channels and slot drainage channels. Ackerstone also produces silicat blocks, bricks and brick facing. The company was founded in 1989 and is located in Corona, Calif.