Quality Control

From incoming raw materials to finished products — every step under strict quality inspection. ISO 9001, ISO 14001, IATF 16949 triple-certified quality management system.

Quality Management System

  • Certifications ISO 9001 · ISO 14001 · IATF 16949
  • Inspection Stage IQC → IPQC → OQC
  • Traceability Full batch tracking & SPC control
  • Defect Rate < 0.3%

Our quality control system covers the entire production lifecycle. Every component undergoes rigorous inspection at multiple stages — from raw material verification (IQC), through in-process monitoring (IPQC), to final outgoing quality check (OQC). All measurements are recorded and traceable.

Inspection Equipment

Our laboratory is equipped with advanced inspection instruments to ensure every component meets strict quality standards. Below are our key inspection devices and testing facilities.

CMM Coordinate Measuring Machine
CMM Coordinate Measuring Machine
Profile Projector
Profile Projector
CCD Vision Measuring Machine
CCD Vision Measuring Machine
Vickers Hardness Tester
Vickers Hardness Tester
Rockwell Hardness Tester
Rockwell Hardness Tester
Salt Spray Test Chamber
Salt Spray Test Chamber

QC Workshop

QC Workshop Overview

Our quality control workshop is equipped with over 20 units of professional testing instruments, including Vickers hardness testers, Rockwell hardness testers, powder density testers, optical crack detectors, and more. Every batch of products undergoes rigorous inspection before shipment to ensure consistent quality and reliability.

Equipment List

No. Equipment Application Precision
1 CMM Coordinate Measuring Machine 3D dimensional measurement ±0.002 mm
2 Profile Projector 2D contour and angle measurement ±0.005 mm
3 Surface Roughness Tester Ra / Rz surface finish measurement Ra 0.01μm
4 Hardness Tester Rockwell / Vickers hardness testing ±1 HRC
5 Digital Calipers & Micrometers General dimensional inspection ±0.01 mm
6 Height Gauge Height and step measurement ±0.005 mm
7 Salt Spray Test Chamber Corrosion resistance testing ASTM B117
8 Thread Gauge Set Thread pitch and depth verification 6H / 6g class

Certifications

Shenzhen Wandu Precision Hardware Co., Ltd. has obtained three major international certifications, demonstrating our commitment to quality management, environmental responsibility, and automotive industry standards.

ISO 9001 Certificate
ISO 9001:2015 — Quality Management System
ISO 14001 Certificate
ISO 14001:2015 — Environmental Management
IATF 16949 Certificate
IATF 16949:2016 — Automotive QMS

Certification Details

Certification Standard Registration No. Validity Certified Entity
Quality Management System GB/T 19001-2016 / ISO 9001:2015 QW/25240041QMD 2025.03.05 – 2028.03.04 Shenzhen Wandu Precision Hardware Co., Ltd.
Environmental Management System GB/T 24001-2016 / ISO 14001:2015 QW/25240042EMD 2025.03.05 – 2028.03.04 Shenzhen Wandu Precision Hardware Co., Ltd.
Automotive QMS IATF 16949:2016 (GB/T 18305-2016) A629025060226 2025.06.13 – 2028.06.12 Shenzhen Wandu Precision Hardware Co., Ltd.

ISO 9001 & ISO 14001 certified by GACC CNCA (State Administration for Market Regulation).
IATF 16949 certified by TÜV Rheinland (Shanghai) Co., Ltd. — Scope: Stamping, CNC turning, CNC milling, injection molding.