Investors can apply for free to query account opening or trading information on the stock exchange website

If a securities investor is an adult and possesses a "Citizen Digital Certificate" or a "Securities Order Certificate," or if a minor possesses a "Securities Order Certificate," they can register on the stock exchange's official website at the "Investor Personal Information Inquiry System (https://investor.twse.com.tw/)" to apply for free access to account opening or trading information. Once the inquiry is completed, the information will be directly sent to the registered email address.
The stock exchange also provides a tutorial video on YouTube titled: "(Complete Version) Where to Check Securities Account Details and Securities Trading Information." The link is: https://www.youtube.com/watch?v=McR3xkNavd8. You are welcome to explore and make use of this resource.