Xin Lang Cai Jing·2025-09-17 03:21Core Viewpoint - The semiconductor lithography sector is experiencing a surge, driven by reports of SMIC testing a deep ultraviolet lithography machine developed by a Shanghai startup, Yuliangsheng, which utilizes immersion technology similar to that of ASML [1] Group 1: Stock Performance - Lithography concept stocks opened high on September 17 and continued to strengthen throughout the session [1] - Notable individual stock performances include Yongxin Optical and Wavelength Optoelectronics both hitting the daily limit up, while Guolin Technology, Sudavige, Maolai Optical, Xinlai Materials, and Lanying Equipment also showed significant gains [1] Group 2: Technology Development - SMIC is reportedly testing a deep ultraviolet lithography machine from Yuliangsheng, with initial results being encouraging [1] - The machine being tested employs immersion technology, akin to that used by ASML [1] - However, it remains uncertain when or if this machine will be ready for mass chip production [1]