ISTEK is one of the leading trade marks in solar energy systems sector. It is being manufactured since 1982 with the same quality, having a substantial impact in promoting solar energy water heating in the country. Being the first to expand its experience in the field internationally, currently ISTEK is exported to over 30 countries in 5 continents.Its quality is approved with many international certificates and test results from independent laboratories. The products manufactured under this brand name include copper collector, selective coated copper collector, aluminum collector, and aluminum towel radiator. As the renewable energy, especially solar energy, has gained importance with global warming, ISTEK has also increased its studies in research and development while pursuing the technological progress in the field. The company keeps improving the products and the production keeping in mind its commitment to environmental protection.