Testing of raw materials

1. Sample Receipt & Registration

• Receive samples from suppliers
• Verify product name, specification, batch No., quantity, and requirements
• Assign unique sample ID and register into system

2. Sample Conditioning

• Condition samples under standard atmosphere:
  21±1℃, 65±2% RH for at least 24 hours
• Ensure stable test conditions before measurement

3. Visual & Dimensional Inspection

• Visual check: color, defects, contamination, uniformity
• Dimensional test: width, weight (GSM), yarn count, fabric density
• Hand feel and appearance evaluation

4. Physical Performance Testing

• Tensile strength & elongation
• Tear strength
• Abrasion resistance
• Pilling resistance
• Washing / dry cleaning dimensional stability (shrinkage)
• Seam slippage
• Elastic recovery

5. Color Fastness Testing

• Color fastness to washing
• Color fastness to rubbing (dry & wet)
• Color fastness to perspiration
• Color fastness to light
• Color fastness to chlorine / non-chlorine bleaching

6. Chemical & Safety Testing

• pH value
• Formaldehyde content
• Azo colorants (AZO)
• Heavy metals
• Carcinogenic / allergenic dyes
• Restricted harmful substances (PFAS, OPP, PVC, etc.)

7. Functional Testing (Optional)

• Antibacterial & anti-mite
• Water repellent & oil repellent
• Flame retardant
• Anti-static
• UV protection

8. Data Analysis & Result Judgment

• Record test data
• Judge against standards:
  ISO, AATCC, GB, OEKO‑TEX®, REACH, etc.
• Determine PASS or FAIL

9. Test Report Issuance

• Compile full test report
• Include items, methods, results, conclusion, signature & stamp
• Provide report for customs clearance, inspection and customer audit