Stewart Concrete Products, 239 Elder Rd, Spokane, MO 65754, US

Operational since 1933, SI Precast Concrete Products is a division of Suhor Industries Inc. The company has been manufacturing precast concrete products in the Midwest utilized by the agricultural industry. Based in Ozark, Mo., other products manufactured include cattle guards, feed bunks, Redi Rock, septic tanks, storm shelters, parking bumpers and others. It offers a wide variety of wastewater products for both commercial and residential arena. Wastewater accessories comprise grommets, filters, valves, orifice shields, pipe and pumps. It has experience in precasting specialized architectural products, signage, stair treads, utility pads and custom storm water products. The company is a member to National Precast Concrete Association (NPCA).