It has been a long time that CB Carbide, in accordance with the requirement of users, develops its special material to allow the hardness, fraction resistance, and flexibility, etc. of mold to comply with the requirements of super pot plunger of semi-conductor. The most important features come from the high tech development of CB Carbide Co. through its R&D experience for many years, making the strict requirement of "tolerance" and "friction resistant property" to be able to comply with the products of high property with various requirements of different users.