Dongguan Kingdom Machine Technology Co., Ltd.
Dongguan Kingdom Machine Technology Co., Ltd.

Quality Control

At Kingdom, quality isn't just a standard—it's the cornerstone of our company. From raw materials to final delivery, every metal sheet, electric screwdriver and component undergoes rigorous checks to ensure flawless performance. Usually, our quality control process will include below five 5 steps
At Kingdom, quality isn't just a standard—it's the cornerstone of our company. From raw materials to final delivery, every metal sheet, electric screwdriver and component undergoes rigorous checks to ensure flawless performance. Usually, our quality control process will include below five 5 steps


1. Raw Material Inspection: Building on Excellence

Our quality commitment begins before production.


  • 100% Raw Material Screening: Incoming metals and electronic components are tested for hardness, dimensional accuracy, conductivity and performance

  • Supplier Vetting: Only ISO 9001-certified suppliers qualify for our Approved Vendor List


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2. Design & R&D: Innovation Meets Rigor

Every screwdriving machine starts with failure-proof engineering.


  • Patent-Protected Tech: 15+ patented systems

  • R&D Team: 5 engineers with 10+ years’ automation expertise.



3. Assembly

Component integration follows military-grade protocols.


Critical Checkpoints:

  • Torque calibration for spindle motors (±1% tolerance).

  • Vision system alignment with 0.02mm repeatability.


Assembly Team:

10+ technicians, each trained for 120+ hours.


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4. Machine Testing: Beyond Industry Standards

No machine leaves our factory without surviving our gauntlet.


  • 48-Hour Endurance Test: Continuous operation at max speed (e.g., 60 screws/minute).

  • Smart Fault Simulation: AI-driven scenarios to validate error recovery.

  • Test Metrics Tracked: Torque consistency, noise levels, energy consumption.


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5. Final Inspection: Zero-Excuse Approval

Your machine must earn its certification.


  • 32-Point Checklist: Covering function, safety (CE/UL), and cosmetic integrity.

  • QC Sign-Off: Dual approval by lead engineer and QA manager.


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