Simple Building Systems - Pre-cast and cast-on-site lightweight concrete and steel panels used for the construction of walls, floors and roofs on tilt-up and metal buildings Sipcrete - Supplies an insulated, energy efficient, high thermal mass building system using concrete. Omnicrete Development Inc. - Offers a building system that features precast insulated concrete construction. BubbleDeck - A two-way hollow concrete structural deck made with reinforcing steel and plastic balls. Includes techniques, specifications and contact information. Cobiax Technologies AG - Supplies a concrete, hollow core deck system that maintains biaxial strength. Includes details of products, projects and news. Stressline Limited - Concrete and steel lintel manufacturers and distributors based in Leicestershire UK.