Core Viewpoint - The implementation of the "two warehouse" function overlap policy by Huangdao Customs has significantly improved the efficiency and cost-effectiveness of supplying domestic low-sulfur fuel oil for international shipping vessels in Qingdao [1][3][5]. Group 1: Policy Implementation - The "two warehouse" function overlap allows fuel oil storage tanks to simultaneously serve as both bonded warehouses and export supervision warehouses, simplifying the process of transferring fuel oil from export supervision to bonded status [3][4]. - This policy change has eliminated the need for physical transfer operations, reducing operational complexity from "two in, two out" to "one in, one out," thereby lowering costs for shipping companies [3][4]. Group 2: Economic Impact - It is estimated that the implementation of the "two warehouse" function overlap can save shipping companies over 20 million yuan annually in related costs [4]. - Over the past three years, the total supply of fuel oil in the Qingdao area has exceeded 7 million tons, indicating a robust growth in the supply oil industry [4]. Group 3: Future Developments - Huangdao Customs plans to continue releasing policy benefits related to the "two warehouse" function overlap, cross-district direct supply of fuel oil, and fuel oil blending to further support the regional shipping fuel supply industry [5].