Quality Control - Rigorous Standards & Multi-Stage Inspection
Quality Control - Excellence at Every Stage
Quality isn't inspected inβit's built in. Our comprehensive quality control system spans every stage from raw material selection to final shipment, ensuring that every piece of furniture meets international standards and exceeds customer expectations. With multi-stage inspections, certified processes, and a defect rate below 0.5%, we deliver consistent quality you can trust.
π Industry-Leading Quality Performance
< 0.5% defect rate | < 2% return rate | 98%+ customer satisfaction | ISO 9001:2015 certified
Our Quality Commitment
β Multi-Stage Inspection
Six quality checkpoints from raw materials to final shipment ensure nothing slips through.
π Data-Driven Quality
Statistical process control and real-time monitoring identify issues before they become problems.
π International Certifications
ISO 9001, FSC, CARB, REACH, BIFMA compliance across all manufacturing facilities.
π¬ Third-Party Verification
Regular audits by SGS, Bureau Veritas, TUV, and Intertek validate our quality standards.
π₯ Trained Quality Team
50+ dedicated QC inspectors with specialized training and certification.
π Continuous Improvement
Regular quality reviews, root cause analysis, and corrective action processes.
π Six-Stage Quality Control Process
Incoming Material Inspection (IQC)
What We Inspect: All raw materials and components before entering production
- Wood & Panels: Moisture content (8-12%), density, surface quality, dimensional accuracy, formaldehyde emissions
- Hardware: Dimensions, finish quality, load-bearing capacity, corrosion resistance
- Fabrics & Leather: Color consistency, tensile strength, abrasion resistance, colorfastness
- Foam & Cushioning: Density, compression set, resilience, fire retardancy
- Packaging Materials: Strength, protective capability, dimensional fit
Rejection Rate: 2-3% of incoming materials rejected for quality issues
Documentation: Material certificates, test reports, supplier quality records
In-Process Quality Control (IPQC)
What We Inspect: Quality checks during each production stage
- Cutting & Machining: Dimensional accuracy (Β±1 mm tolerance), edge quality, hole positioning
- Assembly: Joint strength, alignment, structural integrity, hardware installation
- Surface Treatment: Finish consistency, color matching, coating thickness, smoothness
- Upholstery: Fabric tension, seam quality, cushion placement, pattern alignment
- Welding & Metal Work: Weld quality, surface finish, dimensional accuracy
Inspection Frequency: Every 2 hours during production runs
Corrective Action: Immediate production halt if defects exceed 1% threshold
Pre-Assembly Inspection
What We Inspect: All components before final assembly
- Component Verification: Correct parts, quantities, specifications
- Surface Quality: Scratches, dents, color variations, finish defects
- Dimensional Check: Ensure all parts fit together properly
- Hardware Matching: Correct hardware type, finish, and quantity
- Functional Testing: Drawer slides, hinges, mechanisms operate smoothly
Sampling Rate: 100% inspection for first 50 units, then 20% random sampling
Hold Point: No assembly proceeds without pre-assembly approval
Final Product Inspection (FQC)
What We Inspect: Completed furniture before packaging
- Appearance: Overall finish quality, color consistency, surface defects
- Structural Integrity: Stability, joint strength, load-bearing capacity
- Functionality: Drawers, doors, mechanisms, adjustable components
- Dimensions: Overall size, levelness, symmetry (Β±2mm tolerance)
- Safety: Sharp edges, stability tests, tip-over resistance (where applicable)
- Cleanliness: Dust, debris, protective film removal
Inspection Standard: AQL 2.5 (Acceptable Quality Level)
Sampling Plan: ISO 2859-1 standard (typically 10-20% of production batch)
Packaging & Labeling Inspection
What We Inspect: Packaging quality and accuracy
- Protective Packaging: Adequate foam, cardboard, corner protection, stretch film
- Carton Quality: Strength, moisture resistance, proper sealing
- Labeling Accuracy: Product codes, barcodes, shipping labels, assembly instructions
- Package Integrity: No damage during packaging process
- Weight Verification: Actual weight vs. expected weight (Β±5% tolerance)
- Drop Test: Random cartons tested for shipping durability
Inspection Rate: 100% visual inspection, 5% drop testing
Documentation: Packing lists verified against production orders
Pre-Shipment Inspection (PSI)
What We Inspect: Final verification before container loading
- Quantity Verification: Actual units vs. purchase order
- Product Mix: Correct SKUs, colors, configurations
- Random Sampling: Open 5-10% of cartons for final quality check
- Container Condition: Clean, dry, suitable for loading
- Loading Supervision: Proper stacking, securing, space utilization
- Photo Documentation: Before, during, and after loading
Third-Party Option: SGS, Bureau Veritas, TUV, Intertek inspection available
Final Report: Comprehensive inspection report with photos provided to customer
π¬ Quality Testing & Standards
Comprehensive Testing Capabilities
Our in-house testing lab and partnerships with certified third-party labs ensure compliance with international standards.
Physical & Mechanical Testing:
- Load Testing: Static and dynamic load capacity for chairs, tables, beds (BIFMA, EN, ASTM standards)
- Stability Testing: Tip-over resistance, base stability, structural integrity
- Durability Testing: Cyclic testing for drawers, doors, hinges, mechanisms (50,000+ cycles)
- Impact Resistance: Drop tests, impact tests for surfaces and edges
- Seating Comfort: Foam compression, seat depth, backrest angle testing
Material Testing:
- Formaldehyde Emissions: CARB Phase 2, TSCA Title VI, E0/E1 standards (β€0.05 ppm for CARB P2)
- VOC Testing: Volatile organic compounds in finishes and adhesives
- Heavy Metals: Lead, cadmium, mercury testing for paints and coatings
- Wood Moisture Content: 8-12% optimal range for dimensional stability
- Fabric Testing: Abrasion resistance (Martindale test), colorfastness, tensile strength
Safety & Compliance Testing:
- Fire Resistance: CA TB117-2013, BS 5852, EN 1021 for upholstered furniture
- Chemical Safety: REACH SVHC compliance (EU), Prop 65 (California)
- Sharp Edge Testing: Consumer safety standards for furniture edges and corners
- Small Parts Testing: CPSIA compliance for children's furniture (where applicable)
- Structural Safety: ASTM F2057 (tip-over), BIFMA X5.1 (office seating)
π Quality Certifications & Compliance
| Certification | Scope | Facilities |
|---|---|---|
| ISO 9001:2015 | Quality Management System | All 3 facilities |
| FSC Certification | Sustainable forestry | All 3 facilities |
| CARB Phase 2 | Formaldehyde emissions (North America) | China, Vietnam |
| REACH Compliance | European chemical safety | All 3 facilities |
| BSCI Certification | Social compliance | China facility |
| BIFMA Standards | Commercial furniture safety | Office furniture |
π Quality Performance Metrics
Our Quality Track Record
| Quality Metric | Our Performance | Industry Average | Advantage |
|---|---|---|---|
| Defect Rate | <0.5% | 2-3% | 4-6x better |
| Return Rate | <2% | 8-12% | 75% lower |
| Shipping Damage | <1% | 3-5% | 70% lower |
| Customer Satisfaction | 98%+ | 85-90% | 10% higher |
π Third-Party Inspection Services
Independent Quality Verification
We welcome third-party inspections to provide additional assurance.
Accepted Inspection Companies:
- SGS - Global leader in inspection and certification
- Bureau Veritas - International testing and certification services
- TUV - German technical inspection association
- Intertek - Quality and safety solutions provider
- QIMA - Supply chain quality control
- Customer Representatives - Your own QC team or designated inspectors
Inspection Types Available:
- Pre-Production Inspection (PPI) - Verify materials before production starts
- During Production Inspection (DPI) - Monitor quality during manufacturing
- Pre-Shipment Inspection (PSI) - Final verification when 100% complete
- Container Loading Inspection (CLI) - Supervise loading and verify quantities
- Factory Audit - Comprehensive facility evaluation
πΌ Quality Benefits for Your Business
Reduced Costs
- Lower return rates save on reverse logistics
- Fewer customer complaints reduce service costs
- Less warranty claims and replacements
- Higher customer satisfaction drives repeat business
Brand Protection
- Consistent quality protects brand reputation
- Positive customer reviews and ratings
- Reduced negative feedback and complaints
- Confidence to offer strong warranties
Operational Efficiency
- Predictable quality reduces surprises
- Faster time-to-market with first-time-right production
- Less time spent on quality issues
- Smoother operations and inventory management
Experience Our Quality Excellence
Partner with a manufacturer committed to delivering consistent, certified quality
Request Quality Documentation or Factory Tour
π§ Email: wholesale@yanosaku.com
π¬ Live Chat: Available 27 X 7 (Answer within 2 business days)
π± WhatsApp: +86 178 0546 0741
Available: Quality certificates, test reports, inspection procedures, factory tours (virtual or in-person), third-party audit reports, sample quality verification