Strict Full-Process Quality Control & Professional Testing System
Zero Defect Standard | Full-Round Performance Testing | Stable Quality for Long-Term Brand Cooperation
Quality Built Into Every Stage, Not Checked Only at the End
A complete, standardized and traceable quality system supports long-term cooperation with global handbag and leather-goods brands.
At Junhao Hardware, quality is the core foundation of long-term global brand cooperation. With 19+ years of high-end handbag hardware manufacturing experience, we have built a complete, standardized, and traceable quality control system covering raw material inspection, in-process monitoring, semi-finished testing, finished product verification, and pre-shipment final inspection.
We strictly eliminate defective products, color deviation, surface flaws, structural instability, and plating peeling issues. Every batch of goods follows the pre-production sample confirmation standard to ensure perfect consistency between samples, trial orders, and mass production.
Our rigorous QC standards allow us to maintain stable quality output for high-end European, American, and global fashion brands.
100% In-Stage Inspection Across the Production Chain
We implement full-process full inspection rather than random sampling. Every production link is supervised and recorded:
Raw Material Incoming Inspection
All zinc alloy, brass, stainless steel, iron raw materials are strictly inspected for composition, hardness, surface purity, and environmental compliance. Only qualified materials are allowed into production to avoid base material defects.
Mold & Forming Inspection
Check mold precision, molding tolerance, product symmetry, edge smoothness and structural tightness after each trial run. Eliminate deformation, shrinkage, and uneven sizing.
Polishing & Deburring Inspection
Inspect surface smoothness, edge rounding, no sharp corners, no scratches, no sand marks. Ensure high-grade metal texture suitable for luxury leather goods.
Plating & Surface Finish Inspection
Strictly control plating thickness, uniformity, adhesion, color consistency, luster grade and anti-fingerprint performance. Check all finishes: water electroplating, PVD vacuum plating, antique finish, matte finish, and thick gold plating.
Structural & Functional Inspection
Test the flexibility of locks, buckles, movable chains and connecting parts. Ensure smooth opening, stable closing, firm clamping and no jamming.
Finished Product Full Inspection
100% manual sorting for appearance defects, color difference, size error and structural failure before packaging.
Pre-Shipment Final Verification
Double-check batch quantity, packaging standard, labeling compliance and overall consistency before delivery.
Testing Hardware Against Real Usage & Shipping Conditions
We own an independent testing laboratory to simulate real long-term usage environments and guarantee hardware durability:
Salt Spray Corrosion Test
Test anti-rust and anti-corrosion performance of electroplated and PVD surfaces. Ensure products adapt to humid, coastal and long-distance shipping environments, effectively preventing oxidation and discoloration.
Tension & Pulling Force Test
Test load capacity and firmness of D-rings, hooks, chains and connection hardware. Prevent deformation, breakage or falling off during bag daily use.
Vibration & Durability Test
Simulate long-term transportation vibration and daily opening/closing friction to verify structural stability and plating adhesion.
Color Difference Calibration
Compare finished products with approved standard samples under professional light sources to control color deviation within brand-level tolerance.
Lock the Standard Before Mass Production Begins
To avoid batch quality risks, we enforce a strict pre-production approval process:
Make official pre-production samples before mass production
Confirm appearance, size, color, function and surface effect with clients
Lock all technical parameters, process standards and color standards
Start mass production only after client written confirmation
Defects Are Removed Before Packaging & Shipment
Our QC team strictly prohibits the following defective products from entering packaging and shipment:
Burrs, sharp edges, scratches, dents and uneven surfaces
Color difference, fading, foggy plating and uneven luster
Loose structure, inflexible movement, poor locking performance
Plating peeling, oxidation spots and unqualified coating adhesion
Size deviation and asymmetric shaping
Quality Records Built for Brand Assessment & Export Requirements
All quality procedures comply with ISO9001 quality management system standards.
All products pass RoHS environmental testing, SGS certification, and meet EU and US import safety requirements.
We support full test reports, factory audit documents and quality records for brand supplier assessment and customs clearance.
Quality Responsibility Continues After Delivery
We provide reliable quality after-sales service for all orders:
Non-human damage quality problems support free re-production, replacement and supplementary shipment
Professional QC team tracks every batch of order quality data
Long-term order quality stability optimization for regular brand clients
One-on-one technical after-sales response to resolve quality inquiries quickly
Quality Control Designed for Long-Term Brand Cooperation
Full-process 100% inspection (not random inspection)
Professional laboratory multi-dimensional performance testing
Brand-level color difference and appearance control standard
Stable sample-batch consistency mechanism
ISO-certified standardized quality management
Zero tolerance for major defects
Complete quality traceability and after-sales guarantee
Strict Quality Control Supports Your Brand’s High-End Positioning
Every piece of Junhao hardware is inspected, tested and verified under standardized quality systems. We deliver stable, durable and high-quality metal accessories to help your brand reduce after-sales risks and improve market reputation.