Quality Control & Testing Solutions for Consistent, Durable & Brand-Compliant Bag Hardware
Full-Process Inspection, Laboratory-Grade Testing & Traceable Quality System for Global Brand Standards
Quality Control from Incoming Material to Finished Shipment
A standardized system combines full-process in-line inspection, laboratory performance testing and complete batch traceability.
Quality and reliability are the foundation of long-term brand cooperation. At Junhao Hardware, with 19+ years of specialized handbag and luggage hardware manufacturing experience, we have built a complete and standardized quality control and testing system covering every stage from raw material incoming to finished product shipment.
Our quality system combines full-process in-line inspection and professional laboratory performance testing. We do not rely on random sampling — we implement 100% visual inspection for all visible defects and batch sampling for mechanical and environmental performance, ensuring every piece of hardware meets brand quality, safety and durability requirements.
All quality procedures comply with ISO 9001 quality management standards. All products pass RoHS environmental testing and meet EU and US import safety requirements. We keep complete quality records for every production batch for full traceability.
Simulate Real-World Use Before Hardware Reaches the Market
We operate an independent in-house testing laboratory to simulate real-world usage scenarios and verify hardware durability and performance.
Salt Spray Corrosion Test
Simulates humid, coastal and salt-fog environments to evaluate anti-rust and anti-oxidation performance of plating and PVD coatings.
- Verifies corrosion resistance of different surface finishes
- Ensures products adapt to long-distance ocean shipping and humid regional markets
- Available in 24h, 48h, 72h and custom test durations according to brand requirements
Tension & Pull Force Test
Tests load-bearing capacity and structural strength of load-bearing hardware parts.
- Measures maximum pulling force of hooks, D-rings, chains and strap connectors
- Prevents deformation, breakage or falling off during daily bag use
- Ensures hardware meets functional safety standards
Vibration & Durability Test
Simulates long-term transportation vibration and repeated daily opening/closing friction.
- Verifies plating adhesion and structural stability
- Checks for loosening, peeling or wear after continuous friction
- Guarantees long-term performance in real use scenarios
Color Difference Calibration
Compares finished products against approved standard samples under professional standardized light sources.
- Controls color tone, luster and texture deviation within brand tolerance
- Ensures consistent appearance across different production batches
- Locks exclusive brand color standards for long-term repeat orders
Functional Performance Test
Tests mechanical function of moving hardware parts.
- Verifies smooth opening/closing of locks, buckles and clasps
- Checks spring tightness, clamping force and operation feel
- Ensures consistent functional performance for every piece
Six Quality Gates from Raw Material to Pre-Shipment Verification
We implement 100% inspection at every key production stage, rather than only final random checking.
Raw Material Incoming Inspection
Check material composition, hardness, surface purity and environmental compliance. Only qualified materials enter production.
Forming & Molding Inspection
Verify dimensional accuracy, symmetry, edge quality and structural integrity after die casting, stamping or forging.
Polishing & Deburring Inspection
Inspect surface smoothness, edge rounding, no burrs, no scratches and no sand marks.
Plating & Finishing Inspection
Check plating thickness, uniformity, adhesion, color consistency and surface defects.
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.
Lock Quality Standards Before Mass Production Starts
To avoid batch quality risks and ensure alignment with brand expectations, we enforce a strict sample approval process:
Produce 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
Quality Documentation for Brand Audits & Global Market Access
All quality control and testing procedures follow international standards:
ISO 9001
ISO 9001 certified quality management system
RoHS
RoHS compliant materials and plating processes
SGS
SGS verified product performance and composition testing
GRS
GRS certified recycled material options available
REACH
REACH compliant for EU market access
Inspection, Testing & Traceability Built Around Long-Term Brand Supply
Full-process 100% inspection instead of random sampling
In-house professional laboratory with complete performance testing capabilities
Brand-level color difference and appearance control standards
Strict sample-batch consistency guarantee mechanism
ISO-certified standardized quality management
Complete batch traceability and quality records
Full compliance with global import and environmental regulations
Zero tolerance for major structural and plating defects
Reliable Quality Control Supports Your Brand’s Long-Term Success
Every piece of Junhao hardware is inspected, tested and verified under standardized quality systems. We deliver stable, durable and consistent metal accessories to help your brand reduce after-sales risks and build market reputation.