All the first domestic company that has developed zero backlash small precision coupling in Korea,Sungil Machinery manufactures zero backlash oldham, disk, radial beam, cross joint, jaw and Flexible, Gum Type, rigid coupling through industrial and educational cooperation, research and development and relentless effort to make ultra-precision machinery items.

The company received Korea Venture Design Award for its compact disign of coupling and was recognized for its quality and technology by exhibiting products at various domestic and foreign exhibitions such as Hanover Exhibition (exhibition of factory automation) in Germany.