ISO CERTIFICATION. Bureau of Customs-Subport of Mactan collector Gerardo Campo (second from left) is seen in this Feb. 21, 2022 photo leading customs officers in presenting the documents to the German auditing firm, TvSd. BOC-Cebu maintained its ISO 9001:2015 certification after the independent auditors gave them passing mark, which means its customs clearance processing system and payment of customs duties and taxes, among others, are way within the international standards. (Photo courtesy of BOC-Mactan) CEBU CITY - International passengers and returning Filipinos arriving at the Mactan-Cebu ...