Establishment since 1983, we have been producing the fine grit abrasive stone for 20 years. And, now we becoming the specialist of fine grit abrasive stones based on steady management and high technological level.

Yeonjisa focuses on the efficient production method and continuous technical development for increasing productivity. With positive market cultivation spirit, we respond to the change of the new management environment actively. In new millennium, we will try to become the enterprise, which hits to new times.