The basic idea is (per product line) an open system that consists of single-grade materials. The shelves are made of powder coated steel. Complex moldings unsuitable for mechanical production, such as fittings, clamping elements and handles, are made of plastic injection molding or die-cast metal, depending on the strength requirements. The tabletops are made of glass or synthetic resin, linoleum or chipboard covered with real wood veneers. The veneered tabletops are sealed with a multi-layer, radiation-curing lacquer coating on an aqueous basis. The glue used is low in formaldehyde and meets the requirements of the lowest emission class E1. The table frame and the supporting structure are made of chromed steel.