Huawei Technologies Co.’s latest computer product is powered by a chip manufactured using years-old technology, suggesting US sanctions are still preventing China from developing cutting-edge semiconductor technologies. The processor in the MateBook Fold is built with domestic partner Semiconductor Manufacturing International Corp.’s 7-nanometer technology, according to Canada-based consultancy TechInsights, employing the same process technology adopted in the Mate 60 Pro that stunned US officia...