Jeongnam Choi

Keistone Partners Co. Ltd.(Keistone Partners) is a private equity firm founded in 2007 by Hyun-Kap Yoo. The firm is headquartered in South Korea.

Simpac Holdings Co., Ltd. is a South Korean company that specializes in metal forming technology. The company's press systems are manufactured exclusively in their South Korean plants and are continuously improved based on market insights and value-added manufacturing concepts. Simpac holds almost 50%% of the market share in its home market and has established over 10 sales and service branches since 2004. Simpac's extensive production capabilities and state-of-the-art machine park ensure time and cost-efficient production of high-quality, sophisticated products. The CEO of the private company is Jin-Shik Choi.