Sou Hu Cai Jing·2025-09-19 01:33Core Viewpoint - The advancement of semiconductor localization has led to the emergence of several strong companies in the photoresist sector, providing high-quality products that empower the rapid development of the semiconductor industry [1] Company Summaries - Jiu Ri New Materials (Stock Code: 688199): Jiu Ri New Materials has established a full industry chain layout, becoming the world's largest supplier of photoinitiators and a potential dark horse in the photoresist field. With over 20 years of experience in chemical synthesis and process optimization, the company has developed more than 30 semiconductor photoresist formulations, achieving bulk supply after successful testing by downstream customers. The order volume has reached a ton-level scale, with photoinitiators achieving large-scale sales across various sectors including display panels and semiconductor chip production [3] - Rongda Photosensitive (Stock Code: 300576): Rongda Photosensitive focuses on the research, production, and sales of photoresist products, primarily G-line and I-line photoresists. The company plans to launch its semiconductor photoresist production line in 2025, targeting the packaging market [4] - Tongcheng New Materials (Stock Code: 603650): Tongcheng New Materials operates as a platform enterprise for new materials, covering photoresists (semiconductor/display), specialty rubber additives, and biodegradable materials. Its subsidiary, Beijing Kehua, focuses on semiconductor photoresists, achieving a high domestic market share for KrF photoresists, while ArF photoresists have passed customer validation and are in continuous mass production. EUV packaging photoresists are currently in the research and development stage [5] - Nanda Optoelectronics (Stock Code: 300346): Nanda Optoelectronics' main business includes advanced precursor materials, electronic special gases, photoresists, and supporting materials. Its semiconductor materials cover ArF photoresists and electronic special gases, applicable in the manufacturing of chips with a process node of 28nm and above [6] - Shanghai Xinyang (Stock Code: 300236): Shanghai Xinyang is dedicated to providing integrated solutions for key process materials, supporting equipment, application processes, and on-site services for integrated circuits. Its product offerings include KrF photoresists, wafer-level packaging photoresists, electroplating solutions, and cleaning agents, serving the manufacturing of storage and logic chips [7]