QC Profile

In the hand tools manufacturing industry, product quality directly impacts user safety and performance. As a professional hand tools manufacturer, we adhere to a "Quality First" philosophy, implementing 100% inspection at every stage—from raw material procurement to production and final packaging—to ensure every tool meets the highest international standards.

Our factory has passed BSCI certification (Monitoring ID: 24-0290120, Site amfori ID 156-058871-001) and holds ISO 9001 (Quality Management), ISO 14001 (Environmental Management), and ISO 45001 (Occupational Health & Safety) certifications, demonstrating our commitment to excellence, sustainability, and ethical manufacturing.


End-to-End Quality Control: 100% Inspection at Every Stage

To guarantee the highest quality, we enforce a three-tier quality inspection system covering the entire production process:


1. Inline QC (Batch Testing) – Ensuring Material Excellence

At the initial production stage, we rigorously inspect raw materials using advanced testing equipment:

  • Hardness Testing Machine – Measures steel durability to ensure long-lasting performance.

  • Handle Tensile Tester – Checks the connection strength between handles and tools to prevent breakage.

  • VDE Insulation Tester – Verifies electrical safety for insulated hand tools.

  • Shear Resistance Tester – Simulates real-world usage to assess cutting and gripping durability.

2. Online QC (Real-Time Monitoring) – Preventing Defects During Production

During manufacturing, our quality team conducts checks every 10 minutes on critical processes, ensuring:

  • Dimensional accuracy

  • Flawless surface treatment (e.g., plating, polishing)

  • Secure assembly and ergonomic design

Any minor deviation is corrected immediately to prevent defective batches.


3. Final QC (100% Inspection) – Zero Defects Before Shipping

Before packaging, every tool undergoes 100% final inspection, including:

  • Functionality Test (e.g., smooth plier movement, wrench torque accuracy)

  • Visual Inspection (no scratches, rust, or misprints)

  • Packaging Integrity Check (shockproof, moisture-resistant, correct labeling)

Only flawless products are approved for shipment.


Advanced Testing Equipment for Unmatched Reliability

We invest in cutting-edge testing machines to maintain superior quality:
✅ Hardness Tester – Ensures optimal steel hardness (Rockwell/Vickers scale)
✅ Tensile Strength Tester – Validates handle durability under stress
✅ VDE Insulation Tester – Guarantees electrical safety compliance
✅ Shear Resistance Tester – Confirms tool endurance under heavy use

These tests eliminate potential defects and enhance product lifespan.


BSCI & ISO Certifications: Ethical and Quality Assurance

Our certifications reflect our dedication to responsible manufacturing:

  • BSCI (ID: 24-0290120) – Ensures fair labor practices and worker welfare.

  • ISO 9001 – Standardizes quality management for consistent excellence.

  • ISO 14001 – Promotes eco-friendly production processes.

  • ISO 45001 – Prioritizes employee health and safety.

These credentials reinforce our commitment to quality, sustainability, and social responsibility.


Conclusion: Your Trusted Hand Tools Partner

In a competitive market, quality defines success. Our 100% inspection system, advanced testing, and international certifications ensure that every tool delivers precision, durability, and safety. Whether for DIY enthusiasts or industrial professionals, we provide high-performance hand tools you can rely on.


Looking for a dependable hand tools supplier? Contact us today—let's build excellence together!


Wanzhuo (Jiangsu) Hardware Tools Manufacturing Co., Ltd quality control 0


Hardness test facility

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Handle pull test

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Digital and measuring projector

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Cutter performance test facility

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Integrated electron microscope

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VDE test facility

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Micrometer and vernier calipers

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In-house heat treatment for different product by special control;

Laser heatment for blade to get high level plier.

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