Kojex Machinery Industrial Co., Ltd established in 1988, mainly producing collets and collet chucks, and were the earliest factory to produce ER collets in Taiwan. With demands for higher precision and rigidity of collet systems, Kojex strived to improve the deficiencies of ER system and developed the SD and HEC series of products, which had an incredible reaction in the market. Kojex then went on to designing and manufacturing inner-holding collet chucks, and are proud to be at the forefront of mechanical collet systems in the world today.