https://www.reuters.com/article/us-southkorea-japan-chips-analysis/japans-curbs-on-high-tech-materials-exports-to-south-korea-could-backfire-idUSKCN1VK0JV >Japan's curbs on exports of high-tech materials to South Korea could backfire in the long run, eroding its dominance over a key link in the global chip supply chain, suppliers and experts say.