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What is Bonded Maintenance?
Release Time:2026-01-05 17:31:04  |  Visits:33

In the global energy and shipping industries, generators and engines are critical power equipment. Whether it is a marine generator, gas turbine, gas generator set, or diesel generator, prolonged operation can lead to wear, reduced efficiency, or operational issues. High-quality maintenance and repair are essential for ensuring equipment reliability, extending lifespan, and reducing operational costs.


Bonded Maintenance refers to the process of temporarily importing generators or engines to a designated free trade port—such as the China Hainan Free Trade Port—for repair, where no import duties are required during maintenance, and export after repair is also duty-free.

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Advantages of Bonded Maintenance


  1. Duty-Free / Zero Tariff

    Equipment temporarily imported for repair is exempt from import duties. Exporting the equipment after maintenance is also free of tariffs.

  2. Cost Reduction of 15–30%

    Compared to traditional repair methods, overall costs—including customs duties, logistics, parts, and labor—are significantly reduced.

  3. Professional Technical Expertise

    Experienced maintenance teams provide efficient and reliable full-unit inspections, component replacements, and performance tuning.

  4. One-Stop Service

    End-to-end support for repair, customs clearance, and logistics. Clients only need to deliver the equipment; the maintenance provider handles the rest.


Applicable Equipment


  • Marine generators / ship propulsion engines

  • Gas turbines

  • Gas generator sets

  • Diesel generators


Ideal Clients

  • Ship owners and shipping companies

  • Power plants and energy project operators

  • EPC contractors

  • Generator and power equipment service providers


Through Bonded Maintenance at Hainan Free Trade Port, clients can legally and efficiently reduce maintenance costs, shorten downtime, and ensure long-term stable operation of their equipment—saving both time and operational expenses.