Quality & Service
We control every critical step from raw material sourcing to final inspection, ensuring quality and reliability in every fire door system we deliver, maintain rigorous standards across supply chain.
NEWS
View Products +September. 02, 2025
Below is for fire door after-sales documentation, please fields and retains a copy of this form for warranty validation.
Submit completed forms to Service Department of Shenzhen Longhui Sanhe Safety Technology Group.
1. Customer Information
Field | Details |
Customer Name | |
Contact Person | |
Address | |
Phone Number | |
Installation Date |
2. Product Information
Field | Details |
Fire Door Model | |
Fire Rating | |
Serial Number/ID | |
Purchase Date | |
Supplier | |
Dealer Name |
3. Installation Details
Field | Details |
Installer Name/Company | |
Installation Address | |
Installation Notes | |
- Door frame alignment | |
- Seals (intumescent/smoke) | |
Hardware used (hinges, locks) | |
- Gaps (sides/top/bottom) | |
4. Warranty Registration
Field | Details |
Warranty Period | |
Warranty Start Date | |
Warranty Conditions | |
Covered defects | |
Exclusions (e.g., misuse) | |
Claim procedure |
5. After-Sales Service Record
Date | Service Type | Description | Technician | Customer Signature |
Inspection | ||||
Repair | ||||
Replacement |
6. Maintenance Checklist (Instructions: Tick (✓) after completing each task.
Task | Frequency | Date Completed |
Check door operation (smooth closing) | Monthly | |
Inspect seals for damage | Quarterly | |
Verify gaps (3-4mm sides/top) | Annually | |
Test door closer functionality | Annually | |
Replace damaged hardware | As needed |
7. Customer Feedback
Question | Response |
Were you satisfied with the installation? | ☐ Yes ☐ No |
Did the door meet safety standards? | ☐ Yes ☐ No |
Comments/Suggestions: |
8. Emergency Contact:
For after-sales support, contact:
-Service Hotline: (86 755) - 84511188
- Email: service@lhshdoors.com
- Office Hours: Mon-Fri, 9 AM–5 PM
