The 5-Point Practical Field Inspection Checklist
We don't just glance at boxes. DM brings professional testing tools directly to the Chinese factory floor to execute our rigorous 5-point inspection protocol.
Visual, Finish & Cosmetic Integrity
Direct visual audit comparing production units against golden master samples under standard 1000-lux inspection lighting.
What We Check:
- ✓ Surface Imperfections: Scratches, dents, oil stains, sink marks, flash, burrs, and pinholes.
- ✓ Color & Coating: Color matching against Pantone / RAL charts, powder coat adhesion, anodizing consistency.
- ✓ Logos & Printing: Laser etching clarity, silk screen ink scratch test (3M 600 tape cross-hatch test).
- ✓ Material Cleanliness: No dust contamination, rust spots, oxidation, or degraded plastic smell.
Critical Dimensions & Unit Weight
High-precision caliper and micrometer measurements comparing unit batches to 2D/3D CAD technical drawings.
What We Check:
- ✓ Digital Caliper Checks: Length, width, height, outer/inner diameter, wall thickness (±0.02mm accuracy).
- ✓ Unit Mass & Density: Digital gram scale weighing to ensure raw material has not been shaved by the factory.
- ✓ Thread & Hole Tolerances: Go/No-Go thread plug gauges for M3–M20 screw thread integrity.
- ✓ Assembly Hole Spacing: Center-to-center pitch verification to guarantee bolt-on fitment.
Functionality, Fitment & Assembly
Real-world mechanical and electrical operational testing before goods are packaged into cartons.
What We Check:
- ✓ Power-On & Electronics Test: Voltage draw, LED indicators, USB/Type-C connectivity, switch responsiveness.
- ✓ Mating & Interlock Fit: Physical assembly with mating parts, clips, latches, and hinge friction torque.
- ✓ Mechanical Movement: Smoothness of bearings, slide rails, gears, and hydraulic cylinders.
- ✓ Basic Stress / Load Check: Torque wrench verification of fastener tightening to prevent loose hardware.
Packaging, Barcodes & Cartons
Ensuring export cartons survive international ocean freight, Amazon FBA scanner intake, and courier handling.
What We Check:
- ✓ Barcode & SKU Readability: Scanning UPC, EAN-13, and Amazon FNSKU barcodes with handheld optical scanners.
- ✓ Carton Tally & Layout: Full counting of master cartons, units per box, inner polybag presence, and desiccant bags.
- ✓ Shipping Marks: Verification of PO number, gross/net weight (GW/NW), country of origin ("Made in China"), side marks.
- ✓ ISTA 1A Drop Check (Optional): 1-corner, 3-edge, 6-face manual carton drop test to ensure no internal damage.
Live Video Proof & 24h Photo Report
Complete transparency. You get real-time video verification from the workshop floor and a formal PDF report within 24 hours.
What We Provide:
- ✓ On-Site Live Stream: Connect with DM on WhatsApp/WeChat/Google Meet right from the assembly line.
- ✓ 4K Video Walkthrough: Raw video footage showing active machines, workers, warehouse stocks, and random box pulls.
- ✓ High-Resolution PDF Report: 30–60 annotated inspection photos with precise measurements and defect counts.
- ✓ Unambiguous Verdict: Clear PASS / PENDING / FAIL rating with actionable negotiation steps.
Professional Equipment
Tools We Bring to Every Factory Floor
Digital Vernier Calipers
Mitutoyo 0.01mm high-precision digital calipers & micrometers.
Electronic Gram Scales
Accurate 0.1g digital electronic scales & 50kg luggage hanging scales.
4K 60FPS Video Rigs
High-bitrate stabilized camera gear with dedicated macro lighting.
Optical 2D Barcode Scanners
Instant FNSKU, GS1-128, QR and UPC barcode decoding.
Need an Inspection Scheduled in the Next 48 Hours?
Send us your factory location and product specifications. We will confirm inspector availability and dispatch directly to the industrial park.