Yıldız Demir Çelik Co. Inc. With its laboratories, Chemistry, Mechanical, Paint and Color Laboratories, the company serves both its internal customers and external customers. Our laboratories have been carrying out input control tests of all raw materials that directly affect product quality, process control tests at critical points, alternative new raw material trials and research activities with a state-of-the-art equipment and an experienced staff with high customer satisfaction, accurate and reliable service understanding since 2018.