Advanced Metrology & Reliability Assurance

Quality Control & Metrology Inspection Services

Rigorous multi-tier quality assurance covering incoming raw alloy spectrometry, in-process 3D CMM metrology, 100 ATM hydrostatic water testing, thermal shock evaluation, and final AQL 1.0 optical auditing for timepieces, jewelry, and luxury hardware.

Capability Benchmark

  • Metrology Equipment Mitutoyo 3D CNC CMM (0.001 mm resolution)
  • Optical Inspection High-Magnification Video Measurement Systems (VMS)
  • Spectrometry X-Ray Fluorescence (XRF) Alloy Purity Analyzers
  • Water Resistance Dry Vacuum & Wet Hydrostatic Chambers to 100 ATM
  • Plating Life Testing 72-Hour Artificial Sweat Immersion & Salt Spray
  • Torque & Tensile Digital Torque Analyzers & Pull Testers (up to 500 N)
  • Quality Protocols ISO 9001 Certified Quality Management & AQL 1.0
  • Documentation Full CMM Dimensional Reports & Material Certificates
Technical Scope

Quality Assurance Phases & Laboratories

Quality verification is embedded across every manufacturing stage from raw bar stock to packed shipping cartons.

Material Verification

Incoming Metallurgy Assay (IQC)

Testing alloy composition of raw stainless steel, titanium, and brass bar stock via X-ray fluorescence to ensure compliance with surgical-grade 316L specifications.

  • Analysis Cr, Ni, Mo, and trace element percentages
  • Hardness Testing Rockwell & Vickers hardness indentation
  • Traceability Heat lot numbers tracked to raw mill certs
Micrometer In-Process

In-Process 3D Metrology (IPQC)

First-article and hourly statistical process control on multi-axis CNC machines using Mitutoyo 3D CMM coordinate measuring machines and digital optical comparators.

  • CMM Accuracy Coordinate scanning within 0.001 mm
  • Sampling Rate First-piece and hourly critical datum checks
  • Tool Wear Automatic offset compensation before drift
Environmental Stress

Environmental & Reliability Testing (OQC)

Simulated wear testing including cyclic water pressure to 100 ATM, thermal shock temperature cycling (-20°C to +70°C), and drop impact simulation.

  • Pressure Test ISO 22810 / ISO 6425 water resistance standards
  • Sweat Resistance 72-Hour artificial sweat immersion at 40°C
  • Drop Test 1-Meter drop simulation onto hardwood surfaces
Engineering Precision

Quality Control Metrology & Equipment Register

Strict metrology criteria, equipment standards, and verification methodologies applied across every production batch.

Inspection Task Laboratory Equipment Measurement Accuracy Test Standard
3D Dimensional Verification Mitutoyo CNC Coordinate Measuring Machine 0.001 mm (1.0 µm) ISO 10360-2 CMM accuracy standard
Surface Roughness Audit Taylor Hobson Stylus Profilometer Ra 0.005 µm ISO 4287 surface texture standard
Plating Thickness & Purity Fischerscope X-Ray Fluorescence (XRF) 0.05 µm layer accuracy ASTM B568 coating thickness standard
Hydrostatic Water Pressure Chamber with Digital Transducer (100 ATM) ±0.1 ATM pressure precision ISO 22810 & ISO 6425 horological standards
Manufacturing Protocol

Precision Production Workflow

From technical CAD validation to cleanroom quality inspection, our engineering workflow ensures strict repeatability.

PHASE 01

Engineering DFM & Blueprints

Our engineers inspect your 3D CAD files or physical reference parts to optimize toolpaths, clamping datums, and tolerance stack-ups. Comprehensive 2D manufacturing blueprints are delivered for review.

PHASE 02

Master Prototyping & CMM Audit

First-article pilot samples are machined on 5-axis equipment and routed directly to the metrology lab. Every critical datum, gasket seat, and thread pitch is measured using 3D CMM coordinate probes.

PHASE 03

Batch Machining & Artisanal Finishing

Batch manufacturing utilizes multi-axis Japanese CNC equipment, robotic surface buffing, and master hand-applied satin graining. Components undergo strict optical inspection before movement casing.

PHASE 04

Class 10,000 Cleanroom Assembly & QC

All watch casing and critical sub-assembly takes place in ISO 14644 Class 10,000 cleanrooms to eliminate airborne dust. Every completed piece passes 48-hour mechanical timing and dual pressure tests.

Technical Guidance

Frequently Asked Questions

Common technical and commercial questions regarding our machinery capabilities, materials, and contract manufacturing standards.

What Acceptable Quality Level (AQL) standards do you follow?

Our standard final outgoing inspection operates under AQL 1.0 for major functional criteria and AQL 2.5 for minor cosmetic items. We can also accommodate 100% full-piece client inspection requirements.

Do you provide formal inspection reports with finished shipments?

Yes. Every production run includes comprehensive Quality Inspection Reports, CMM dimensional scan sheets, and Mill Test Certificates (MTC) verifying alloy purity.

How do you handle water resistance testing for diver watches?

Dive watches undergo ISO 6425 protocols: 100% overpressure testing to 125% of rated depth in water, followed by condensation testing on hot/cold plates to verify zero internal moisture.

Can our third-party inspection agency audit our order at your factory?

Yes. We welcome third-party inspection firms (such as SGS, Intertek, or AsiaInspection) to conduct mid-production or final pre-shipment inspections at our Dongguan facility.

Start Your Production Project

Bring Precision Engineering to Your Product Line

Send us your 3D CAD drawings, component blueprints, or technical specifications. Our engineering desk will deliver an exhaustive DFM analysis, tooling proposal, and quotation within 24 business hours.

Submit Request for Quotation