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E-dig Machinery is a Trustworthy Used Construction Machine Supplier For Global Partner.

Our Core Advantages: Why Choose Us?  

Rigorous 12-point inspection for every used excavator to guarantee core component reliability.

We boast professional technical experts with over 10 years of hands-on experience, who are proficient in the structure, hydraulic systems, and electronic control systems of various excavator models. They can accurately evaluate the original condition of equipment, pinpoint potential defects, and assess its refurbishment value. 

Prior to delivery, each machine undergoes stringent full-performance testing to guarantee stable and reliable refurbishment quality. Compared with brand-new machines, our refurbished units are priced at only 30%–50% of the cost of new ones, which significantly lowers your equipment acquisition threshold and investment risks, while shortening the return-on-investment (ROI) cycle.
Service Process
Customized fleet solutions for clients with bulk or project-specific excavator needs
Step 1
Professional Evaluation

Static Inspection: Conduct a comprehensive preliminary inspection on the equipment’s appearance, structural components (boom, arm, chassis), engine, and hydraulic system.


Dynamic Test Run: Start the equipment to test the smoothness of each action, output power, abnormal noise, temperature rise, etc., and read the data from the equipment’s electronic control unit (ECU).

Step 2
Deep Cleaning

Adopt high-pressure cleaning and ultrasonic cleaning methods to thoroughly remove oil stains and rust scales, laying a solid foundation for subsequent inspection and assembly.

Step 3
Inspection & Refurbishment of Core Components

Engine Inspection: Perform disassembly inspection, replace worn parts such as piston rings, bearing shells, valves, and sealing elements, then reassemble and debug the engine to its optimal operating condition.


Hydraulic System Inspection: Inspect hydraulic pumps, motors, multi-way valves, and hydraulic cylinders; replace seals, perform valve core lapping, and repair or replace damaged components.


Structural Component Repair: Conduct professional welding repair, reinforcement, and stress relief treatment on cracked or deformed structural components.


Electrical System Inspection: Overhaul the circuit, replace aged wire harnesses, sensors, and instrument panels.

Step 4
Appearance Refurbishment

Professional Painting: Carry out sandblasting (or grinding), primer coating, topcoat spraying, and baking curing; provide standard colors or custom colors as specified by you to restore the equipment’s appearance to a like-new state.

Step 5
Comprehensive Performance Test & Simulated Working Condition Verification

Test Site Verification: Conduct several hours of comprehensive action testing, power testing, and traveling performance testing at the on-site test ground.


Final Inspection: Ensure stable performance of all equipment systems, then conduct final quality inspection and pre-delivery preparation.

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If you have any questions about our products or services, feel free to reach out to customer service team.
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