Operational since 1983. DUNCO materials has been distributing READY-MIX concrete. Based in plant city. FLA. . The Company offers a variety of landscaping aggregates in numerous shapes. Colors and textures. It has ONE of the largest selections of mulch. Flagstone and boulders. In addition. DUNCO materials provides an array of building products including expansion joints and rebar. The Company also offers bagged cement products. Such AS mortar. Portland and super stucco. Precast concrete sills. Lentils and parking bumpers.