SEOUL: Korea Zinc Chairman Yun B Choi said on Thursday (Jan 9) that it is in preliminary talks with some US entities to supply antimony, after China's export ban to the US disrupted the market for the mineral used in semiconductors. Choi told reporters at a briefing that the company was interested in long-term contracts, and was talking with US traders and others, without naming any of the entities. Antimony prices are set to hit record levels after China banned exports of the mineral to the