ISO 9001 Quality Standards

Quality Control System Precision. Reliability. Traceability.

Structured quality management approach ensuring consistent accuracy and material traceability across every order. Prevention-first methodology with integrated quality checks at every production stage.

3-Stage
Quality Inspection
100%
Material Traceability
±0.005mm
Precision Tolerance
Quality control process in aluminum and copper manufacturing
Certified Quality
ASTM / JIS / RoHS

Quality Control System Overview

At YCS Machining, our Quality Control System is designed to ensure consistent accuracy, material traceability, and process reliability across every order. We follow a structured, data-driven quality management approach that aligns with ISO 9001 principles and international manufacturing standards.

Our system focuses on prevention first, not correction after failure. By integrating quality checks into every production stage, we minimize risk, reduce rework, and deliver stable, repeatable results for industrial applications.

Why Prevention Matters

  • Reduces production risk and downtime
  • Ensures consistent part quality across batches
  • Supports high-precision CNC machining requirements
  • Enables long-term supply stability

Industrial-Grade Reliability

Designed for prototypes, small batches, and volume production

Quality Framework

Quality Management Framework

Our Quality Control System is built around four core pillars that work together to ensure every part meets defined technical, dimensional, and performance requirements.

1

Material Traceability

Full tracking from raw material to finished part with certified documentation

2

Process Control

Embedded quality checks throughout manufacturing workflow

3

Inspection & Verification

Comprehensive dimensional and functional testing before shipment

4

Continuous Improvement

Data-driven optimization for long-term process stability

Stage 1: IQC

Incoming Material Control

All raw materials entering our facility are subject to strict verification procedures. Only qualified materials are released into production, with each batch assigned a traceability ID for full material tracking throughout manufacturing.

Incoming Inspection Process

1

Mill Test Certificate Verification

Cross-reference MTC data with material specifications

2

Material Grade & Composition Confirmation

Verify grade, temper, and chemical composition accuracy

3

Visual Surface Inspection

Check for surface defects, damage, or contamination

Full material traceability from source to finished part

Incoming inspection and material traceability with mill test certificates
5000+
Tons Inventory
In-process quality control during CNC machining
±0.005mm
Tolerance
Stage 2: IPQC

In-Process Quality Control

Quality checks are embedded directly into the manufacturing workflow. This approach allows us to identify deviations early and maintain tight tolerances during CNC machining and fabrication.

Process Monitoring

First Article Inspection (FAI) before batch production
In-process dimensional checks at defined intervals
Tool wear and machine condition monitoring
200
Tons Daily Capacity
10+
Production Lines
Stage 3: OQC

Final Inspection & Verification

Before shipment, all finished parts undergo a structured final inspection. When required, we provide full inspection reports, including dimensional data and acceptance results.

Final Quality Checks

Dimensional verification against engineering drawings
Surface finish evaluation and appearance check
Visual and functional inspection verification

Measurement & Inspection Equipment

We utilize calibrated inspection tools and measuring equipment to ensure accuracy:

CMM Systems
Digital Calipers
Height Gauges
Roughness Testers
Final dimensional inspection using CMM equipment
100%
Inspection

Documentation & Traceability

Every order is supported by structured quality documentation, ensuring full traceability and compliance with customer and regulatory requirements.

Mill Test Certificates (MTC)
Inspection Reports
Process Control Records
Non-Conformance Reports (if applicable)

Continuous Improvement

We continuously evaluate production data, inspection results, and customer feedback to improve our quality system and ensure long-term process stability.

Process optimization
Inspection efficiency
Risk reduction
Quality consistency across batches

Non-Conformance & Corrective Action

If a deviation is identified, we apply a formal corrective action process. This closed-loop system ensures continuous improvement and long-term process stability.

1
Root cause analysis
2
Corrective and preventive actions (CAPA)
3
Process improvement implementation
Closed-Loop System
Ensuring continuous improvement

Looking for a Manufacturing Partner with a Structured Quality System?

Our Quality Control System is designed to support industrial-grade reliability, whether for prototypes, small batches, or volume production.

Get in Touch

Phone
+86 0769 81886021 / +86 0769 81886025
Mobile: +86 15625895257 / +86 18128535118
Email
ycsmachining@yeah.net
sales@ycsmachining.com
Address
No.127, DeZheng East Road, Chang'an Town
Dongguan City, Guangdong Province, China, 523800
Business Hours
Monday - Friday: 8:00 - 18:00
Saturday: 9:00 - 17:00

Ready to Start Your Project?

Contact our quality team to discuss your manufacturing requirements and learn how our structured quality system can support your production needs.

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