RHEIN-CHEMOTECHNIK GMBH. We specialise in concrete additives and surface protection products for the concrete processing industry. Our product range includes over 200 products from the following areas: Concrete additives, surface protection products, concrete release agents, cleaning and maintenance products, granulate for scratch and layer protection, dosing systems. Experienced concrete engineers (VDB) and consultants help you to select the right products, perform suitability checks in the laboratory or in the factory and to work out company-specific solutions. All products and services are measured and assessed according to the specifications of the QM system certified according to DIN EN ISO 9001. In addition, all concrete additives that are used for unreinforced concrete, reinforced and prestressed concrete, for cast-in place concrete and ready-mixed concrete, and for concrete for prefabricated parts, correspond to the EN 934-2 standard. In-house production control is monitored by an independent monitoring organisation (MPA NRW).