Inland Concrete Products, Inc. (ICP) is a company based in Fontana, California, specializing in manufacturing and distributing Dobies and plastic rebar support products for the rebar fabricator community. Founded in 2011 by Doug Hartzheim and John Gilner, ICP has a history of innovation, offering high-strength and high-performance plastic bar support products designed for the demanding environment of concrete construction. The company prides itself on quality products that exceed compressive strength requirements and timely service with a large inventory of dobies. In addition to Dobies, ICP provides a complete product line of plastic bar supports and plastic slab bolster, focusing on innovation, quality, and timely service to meet the needs of the west region rebar fabricator community.