Regulations Governing Securities Trading on the Taipei Exchange Article 2

The term "trading of securities on the Taipei Exchange (TPEx)" as used in these Regulations means that the securities are not traded by competitive auction on the central stock exchange, but rather are traded over the counter specially provided by securities firms, and such trading may simply be referred to as "TPEx Trading."
中文原文 證券商營業處所買賣有價證券管理辦法第2條
本辦法所稱證券商營業處所買賣有價證券,指有價證券不在集中交易市場以競價方式買賣,而在證券商專設櫃檯進行之交易行為,簡稱櫃檯買賣。

English translation for reference only; the Chinese text prevails. Not legal advice.