About us About us Anker Stuy Composites markets four different emission-free gelcoats. Sustainability was paramount in the development of these gel coats. With the changing climate and growing environmental awareness, the demand for zero-emission gel coats has increased. The development took into account the demand for gel coats for different surfaces and conditions. By marketing four different variants, you can respond to the different needs. Anker Stuy Composites is located in Terwispel where production also takes place.