
Japan and the Netherlands have agreed in principle to join the US in tightening controls over the export of advanced chipmaking machinery to China, according to people familiar with the matter, a potentially debilitating blow to Beijing’s technology ambitions. The three-country alliance would represent a near-total blockade of China’s ability to buy the equipment necessary to make leading-edge chips. The US rules restricted the supply from American gear suppliers Applied Materials Inc., Lam Research Corp. and KLA Corp. Japan’s Tokyo Electron Ltd. and Dutch lithography specialist ASML Holding NV are the two other critical suppliers that the US needed to make the sanctions effective, making their governments’ adoption of the export curbs a significant milestone.