Profile: Retec Kunststofftechnik GmbH supplies acrylics and orthodontic materials. Retec sin is the number one acrylic for orthodontic devices. This universal material can be used for any orthodontic indication. Retec don N is an economic, cadmium-free denture base acrylic that allows high quality results by using any known polymerization technique. Retec don 2000 belongs to the newest generation of short-term hot curing acrylics.