Regulations Governing Fees for Commodity Inspection Article 6

An applicant shall submit foreign currency exchange certificates or other evidence along with the inspection application in order for the inspection authority to calculate the relevant inspection fees and rates. If such documents are not submitted along with the inspection application, an applicant is required to do so within one month.
中文原文 商品檢驗規費收費辦法第6條
檢驗費依費率計收時,報驗義務人應於報驗時檢具結匯證明或其他銷貨證明,以憑計收檢驗費。
但未於報驗時繳驗者,應於報驗後一個月內補正。

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