Advanced Echem Materials Company Limited develops and manufactures specialty chemical materials for semiconductor advanced processes, advanced packaging, and display applications. The company offers semiconductor materials including IC manufacturing materials such as positive photoresists, polyimide, electronic-grade developers, and bottom anti-reflective coatings (BARC); advanced packaging materials; clean chemicals comprising clean solvents, CPS developers, and strippers; CMOS image sensor materials; fingerprint-on-display sensor materials; and chip-on-film materials; as well as display materials including thin-film transistor liquid crystal display (TFT-LCD) photoresists, organic light-emitting diode (OLED) materials, and Micro LED materials. It operates primarily in Taiwan, with facilities including its research and development center and production headquarters at No. 455, Xinhe Road, Longtan District, Taoyuan City; a factory in Tainan Tree Valley; and a semiconductor material production site in Nankang Science Park, Kaohsiung. Founded in 2003 and formerly known as eChem Solutions Corp, the company changed its name to Advanced Echem Materials Company Limited and listed on the Taipei Exchange under ticker 4749.TWO; it expanded production facilities in Tainan and Kaohsiung starting in 2020 while investing over 10% of turnover annually in R&D.