Core Viewpoint - Beijing Mozilla Firefox Information Technology Co., Ltd. has officially announced the termination of all operations related to Mozilla and the Firefox browser in mainland China, effective immediately, with complete cessation by September 29, 2025 [1]. Group 1: Company Operations - The domestic version of Firefox will cease operations, with the Chinese website no longer providing product downloads and local services such as account registration and community support being halted [1]. - The company, established in March 2011, has faced multiple enforcement actions since January 2025, accumulating over 36 million yuan in executed amounts [5]. - The Firefox browser itself will continue to operate, but all account information linked to "Firefox Pass" will be permanently deleted [1][9]. Group 2: User Impact - Many long-time users expressed anxiety over the loss of their data, including bookmarks and saved passwords, as the Chinese version of Firefox has a separate account system that does not sync with international accounts [9]. - Some users have reported dissatisfaction with the Chinese version of Firefox, citing excessive advertisements that negatively impact user experience [7]. - The last post on the official Weibo account of Firefox was made in August 2023, indicating a decline in engagement [3].