. Considered as the world's oldest manufacturer of tungsten and related products, the group has earned reputation for its excellent global marketing and large production capacity worldwide. In addition to the initial 80 per cent stake purchased in 2006, Warren Buffett paid additional 2 billion dollars for the remaining stake in IMC, of which TaeguTec was a part. Through this acquisition, TaeguTec became Berkshire Hathaway's first and only wholly owned subsidiary in Korea