Quality Control & Assurance | YiDenim OEM/ODM Solutions

Our Pledge

Our Quality Promise

At YiDenim, quality is not just a process — it's our promise. Every pair of jeans produced through our manufacturing network undergoes rigorous multi-stage inspection by our dedicated QC team to ensure it meets the highest standards of craftsmanship, durability, and comfort.

With a dedicated QC team of 60+ professionals working on-site at our partner facilities, we maintain a defect rate below 0.5% — far below the industry average. Our commitment to quality has earned us the trust of premium brands across 30+ countries, and we continuously improve our processes through data-driven analysis and employee training programs.

Inspection System

4-Stage Quality Inspection

A comprehensive quality management system that monitors every stage of production from raw materials to finished goods

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Stage 1 — IQC

Incoming Quality Control

Fabric weight, shrinkage test, color fastness test, fabric inspection on 10-point system

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Stage 2 — IPQC

In-Process Quality Control

Daily patrol inspection, first piece approval, in-line measurement check

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Stage 3 — FQC

Final Quality Control

100% final inspection: appearance, measurement, workmanship, washing effect

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Stage 4 — OQC

Outgoing Quality Control

AQL 2.5 sampling before shipment, final packaging check, shipping record

Testing Standards

Inspection Items & Standards

All products are tested against international quality standards with precise measurable criteria

Quality control team inspecting finished denim garments in the QC department

Test Item	Standard	Test Method
Dimensional Tolerance	±0.5" (waist), ±1" (inseam)	Manual measurement
Color Fastness (Washing)	Grade 4+	GB/T 3921
Color Fastness (Rubbing)	Grade 4 (dry) / 3 (wet)	GB/T 3920
Shrinkage (Warp/Weft)	≤3% / ≤3%	AATCC 135
Seam Strength	≥150N	GB/T 2664
Tensile Strength	≥300N	Fabric strength tester
pH Value	4.0 - 9.0	pH meter
Needle Detection	Zero tolerance	Needle detector
Zipper Test	5000+ cycles	Zipper fatigue test
Button Pull Test	≥80N	Button pull tester

Testing Facilities

Quality Testing Laboratories

Our partner manufacturing facilities are equipped with state-of-the-art testing instruments to ensure every production batch meets international quality standards

Fabric strength testing equipment in quality laboratory

Fabric Strength Tester

Tensile, tear, and seam strength testing

Color fastness testing equipment for denim fabrics

Color Fastness Tester

Washing, rubbing, and light fastness evaluation

Automatic needle detection machine for finished garments

Automatic Needle Detector

100% needle detection on all finished goods

Sustainability

Eco-Friendly Quality Assurance

We believe quality and sustainability go hand in hand. Our quality control processes incorporate environmental standards that ensure your products are not only well-made but also eco-responsible.

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Water-Saving Washing

ECO wash technology reduces water usage by 40% compared to traditional washing

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Eco-Friendly Dyes

All dyes are AZO-free and meet OEKO-TEX Standard 100 requirements

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Waste Recycling

Fabric scraps recycled, water treated before discharge, zero harmful discharge

Eco-friendly denim washing plant with water-saving technology

Our Guarantee

Our Quality Commitment

We stand behind every product we make. If there's a quality issue, we take full responsibility.

Zero Defect Policy: We inspect every piece before shipping

If quality issues are found after delivery, we take full responsibility

Free replacement for confirmed defective products

Dedicated QC team available for video inspection during production

After-Sales Process

4-Step Issue Resolution

A systematic approach to handle quality concerns quickly and effectively

1

Report Issue

Contact your account manager with photos and details

2

Root Cause Analysis

We investigate and identify the cause within 48 hours

3

Corrective Action

Replacement or refund, plus process improvements

4

Follow-Up

We follow up to ensure the issue doesn't happen again

Compliance

Quality & Compliance Standards

Our partner manufacturing facilities maintain internationally recognized certifications including ISO 9001 (Quality Management), BSCI (Social Compliance), OEKO-TEX Standard 100 (Textile Safety), and SEDEX (Ethical Trade Audits).

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ISO 9001

Quality Management System — held by our partner facilities

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BSCI

Business Social Compliance Initiative — held by our partner facilities

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SEDEX

Supplier Ethical Data Exchange — our partners are registered members

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OEKO-TEX

Standard 100 — tested for harmful substances, held by our partner facilities

Quality Control