Advanced Micro-Fabrication Equipment China (AMEC), the country’s top chip-tool maker, says its preliminary profit will nearly quadruple in the first half of the year as robust demand for home-grown semiconductors continues amid US sanctions. Based on unaudited figures, the company said its income between January and June was at least 2.7 billion yuan (US$400 million), representing a year-on-year growth of 282 per cent, according to a filing to the Shanghai Stock Exchange on Monday. The upper...