They are developing Photoresist. Looks like quite a few companies in China developing photoresist now. They will undecut the prices of foreign firms in China now. It will be nightmarish for foreign suppliers.
I am surprised that they actually received the DUVL from SK Hynix.
The Crazies in the Trump Admin wanted South Korea to stop the shipment at one point.
The wanted the South Korean Government to charge the Hynix employee involved with selling Tech Secrets. He would have been sentenced to life imprisonment.
But looks like with the demise of Trump the deal was allowed to go through.
Those crazies behaved exactly as those sorts of crazies do. They absolutely want to do everything to stop China from acquiring any sophisticated IC chip manufacturing equipment and materials utilized in IC chips, as well as to prevent China from developing its own indigenous capabilities in IC chip manufacturing and IC chip making equipment and IC chip making materials making, but also in all areas of sophisticated manufacturing such as the production of single crystal turbine blades. Remember in late 2018 when they drew up at list of demands that explicitly called for China to concede to US approval of any industrial policy of China's formulation?
Even though the Biden Administration is unlikely to be so imperious, the Americans are not welcoming of China's industrial policy, but China absolutely has no choice to gain the capability to domestically produced any item of sophisticated technology that is worth producing, be it marketable or not, because it cannot rely on any foreign entity to be a steady supplier. Pressured by the United States against their own economic interests, countries like Japan, Germany, and the Netherlands will restrict or prevent sales of particular high tech items to China by companies of their own origin and nationality, even when they are thoroughly devoid of US content. China must be capable of mastery of the entire spectrum of sophisticated IC chip manufacturing, from production of high purity silicon ingots, through the making of wafers, photoresists, photolithographic light sources, photomasks, lenses, vapour deposition etc. If China can cost effectively find a way of producing 7nm or lower precision IC chips using DUV fine... If EUV is the only cost effective methodology, it must master it...