Forms, Equipment, and Construction Technology for Structural Precast Concrete Walls, Floors, Columns and Beams. Over twenty-five years of precast concrete forming innovation and structural precast concrete construction experience. WAFFLE-CRETE International, Inc., located in Hays, Kansas, USA, manufactures and markets WAFFLE-CRETE Building Systems worldwide. The company provides innovative construction technology to qualified builder/developers, who are looking for a fast, efficient and cost effective method of building with structural precast concrete.