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.

Advantages of Bonded Maintenance
Duty-Free / Zero Tariff
Equipment temporarily imported for repair is exempt from import duties. Exporting the equipment after maintenance is also free of tariffs.
Cost Reduction of 15–30%
Compared to traditional repair methods, overall costs—including customs duties, logistics, parts, and labor—are significantly reduced.
Professional Technical Expertise
Experienced maintenance teams provide efficient and reliable full-unit inspections, component replacements, and performance tuning.
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.