— REUTERSApple has been testing ​memory chips from China's ChangXin Memory Technologies (CXMT) across product lines including iPhones and MacBooks to mitigate a component shortage fueled by ​the AI boom, the Wall ​Street Journal reported on Sunday. READ: China’s memory chip makers ride AI boom to new power and US scrutinyLaptop makers HP and ​Acer ⁠have started using CXMT memory chips in devices sold outside the US ⁠to ​ease supply shortages, the ​newspaper said. CXMT has risen to become the world’s fourth-biggest maker of memory chips, including the DRAM variety used in smartphones, laptops and servers. Memory chips that help devices run apps and store files were once a low-margin business. The Chinese memory makers are now picking clients and dictating prices.