With More than 60 Years of Professional Production

experience and an annual output of more than 35million screwdrivers, we are the largest manufacturer of screwdrivers in Taiwan. We are sold all over the world and are trusted by professional users to provide users with more professional and safer. The product YIH CHENG's innovative research on metal materials is far ahead of the industry. The new steel SVCM⁺ developed by the company has the characteristics of high torque, high toughness and high hardness, which makes the torque of the screwdriver produced by YIH CHENG 20% higher than the average product, and the hardness is higher, wear-resistant, is the best choice for professional users.