The Administrative Regulations Governing the Inspection of Imported Alcohol Article 16

The authorized agency (institution) shall notify the Customs stationed staffs or the responsible staffs of the independent management business before conducting sampling; while sampling, it shall be conducted jointly with the obligor of the application for inspection or his (her) proxy.
中文原文 進口酒類查驗管理辦法第16條
受託機關(構)取樣前,應先行知會海關駐庫(站)關員或自主管理業者之專責人員;取樣時,應會同申請查驗義務人或其代理人。

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