The Regulations on Collection,Custody and Use of Commercial Port Dues Article 7
The commercial port authority collects the price difference by one of the following:1.If the commercial port dues collecting system cannot recognize the size of the container, and charges it the tariff rate of 20 feet less container load cargo, but which is 21 feet above after the verification.2.The pay-party who is levied on Port Dues and his consigned-customs-broker should fill out the container number of full container load cargo in Customs Declaration Sheet, whereas not to, results in charging the Port Dues by less than container load cargo instead after the verification.
中文原文 商港服務費收取保管及運用辦法第7條
貨物有下列情形之一者，由航港局另行填發商港服務費繳納單補收差額：
一、商港服務費收費系統無法辨識貨櫃尺寸，而以每整櫃貨二十呎以下收費規定先行計收後，經查證係二十一呎以上貨櫃。
二、繳納義務人及其委託之報關業者，應於報關單中填列整櫃貨之貨櫃號碼而未填列，致商港服務費收費系統誤以併櫃貨收費規定計收後，經查證係整櫃貨裝載。
一、商港服務費收費系統無法辨識貨櫃尺寸，而以每整櫃貨二十呎以下收費規定先行計收後，經查證係二十一呎以上貨櫃。
二、繳納義務人及其委託之報關業者，應於報關單中填列整櫃貨之貨櫃號碼而未填列，致商港服務費收費系統誤以併櫃貨收費規定計收後，經查證係整櫃貨裝載。