At GTP we work exclusively for the development, production and marketing of innovative exothermic and insulating riser system ... s for the international foundry industry focusing on foundries utilizing both automatic and hand moulding lines for the casting of iron, steel and non-ferrous materials. Besides our main facility in Grevenbroich, located between Cologne and Dusseldorf, in Germany we have our own facilities in the USA, China and Turkey. Our aim at GTP is to provide our customers with the most up to date and innovative product portfolio possible combined with a high value adding technical service. read more