1. Material Standards

• Borosilicate Glass: All products use 3.3-4.0mm high-temperature resistant glass (ISO 4802-1 certified).

• Non-Toxic Components: Joints, downstems, and accessories comply with FDA/EU ROHS safety standards.

2. Production QC Process

• Pre-Production: Mold design stress-tested for structural integrity.

• In-Line Inspection:

  • Thickness uniformity (laser measurement)

  • Joint airtightness (pressure testing)

  • Surface smoothness (manual + machine inspection)

• Final Audit: 100% functional test (water filtration, percolation check).

3. Defect Classification & Tolerance

Defect TypeTolerance (Wholesale)ActionMinor (cosmetic bubbles)≤3% of batchBuyer approval for shipmentMajor (structural cracks)0%Immediate rejection

4. Warranty & After-Sales

• 1-Year Limited Warranty: Covers manufacturing defects (excludes misuse/accidental damage).

• Bulk Order Protections:

  • Free replacement for defects ≥5% of shipment volume.

  • Priority production slots for repeat clients.

5. Certifications & Compliance

• Factory Certificates: ISO 9001, BSCI audit reports available upon request.

• Customization Compliance: Labels/packaging meet destination country regulations (e.g., California Prop 65, CE).

6. Sustainable Quality Control

• Batch Tracking: Each unit laser-marked with production date/QC inspector ID.

• Continuous Improvement: Monthly staff training on glassblowing techniques.

For Wholesale Clients:
✅ Pre-Shipment Video Inspection Available
✅ Third-Party QC (SGS/BV arranged at buyer’s cost)
✅ Custom QC Checklists (Provide your standards)

Contact: azael@glassbongfactory.com (+86 152-0519-0013)

Quality Assurance Policy