Source Identification Code regulation Article 3
SID Codes shall be inscribed from left to right in a straight line or a curved line and in a human readable form.
中文原文 來源識別碼管理辦法第3條
來源識別碼之壓印標示，其排列應由左至右，並以直線或輻射狀為之，且以肉眼即能檢視。
English translation for reference only; the Chinese text prevails. Not legal advice.