<p>➀ Photoresist is a critical material for chip manufacturing, with Chinese companies making significant progress in breaking international monopolies.</p><p>➁ The article explains the working principle of photoresist and its applications in various industries.</p><p>➂ It highlights the progress made by Chinese companies in the field of photoresist, including the success of some domestic companies in developing and producing various types of photoresist.</p><p>➃ However, it emphasizes the significant gap between Chinese and Japanese photoresist technologies, particularly in the high-end and advanced markets.</p><p>➄ The article discusses the reasons behind the strength of Japanese photoresist companies and suggests that Chinese companies need to focus on research and development, industrialization, and building an industry ecosystem to catch up.</p>