With the development of the civil aviation industry within the Yangshan Free Trade Zone (FTZ) in Shanghai's Lin-gang Special Area, the aviation industry chain has extended from bonded manufacturing to bonded inspection and maintenance services in recent years. Aviation bonded maintenance has become an important component of the aviation industry chain in the Yangshan FTZ.

The integration and advancement of aviation bonded manufacturing, maintenance, inspection, and research and development within the Yangshan FTZ are contributing to the formation a high-level aviation "bonded +" industry ecosystem.

The Yangshan FTZ first initiated aviation bonded maintenance services in March of 2022. A range of services are now available, including maintenance for ARJ21 regional aircraft and C919 large passenger planes, as well as tasks like aircraft engine borehole probing and polishing, and high-pressure turbine blade replacement.

Pang Xiaoyi, a representative from an aviation maintenance enterprise within the zone, stated, "Before the launch of the bonded maintenance center in the Yangshan FTZ, domestic airlines needing quick engine repairs had to send the engines abroad for servicing, leading to long transportation times and difficulties in securing repair slots. Now, customers can efficiently repair engines within China, significantly reducing operational costs."

To support the development of the aviation industry's bonded maintenance sector, Yangshan Customs conducted research on key companies in the industry chain. Leveraging the advantages of the "bonded maintenance service package" policy within the zone, Yangshan Customs supported leading enterprises like China Eastern Airlines in bringing maintenance projects into the zone. Collaborating with local governments, comprehensive supervision plans were formulated to simplify declaration processes for entry and exit, logistics, and guarantee approvals, aiding companies in reducing customs clearance costs. By establishing a communication platform involving customs, industrial parks and supply chain enterprises, efficient data integration between customs and enterprises was achieved.