Comprehensive Factory-Direct Assurance and Technical Support for Global B2B Projects
At Crestor Door Manufacturing Co., Ltd., every thermal break aluminum window and door system is manufactured in accordance with strict ISO 9001:2015 quality control management standards. Our warranty program is tailored for international distributors, window brands, general contractors, and project developers to provide complete commercial confidence and long-term operating reliability.
Guaranteed against structural defects and severe finish deterioration under standard environmental exposure.
Full coverage for seal integrity, moisture prevention, and thermal performance across all dual and triple glazed IGUs.
Rigorous operational guarantees for multi-point locking systems, heavy-duty hinges, and stainless steel rollers.
Our explicit policy guarantees transparency so procurement managers and contractors know exactly what is covered during project execution and long-term building lifecycle.
| Category | What Is Covered | What Is Not Covered |
|---|---|---|
| Installation & Workmanship | Products installed in full accordance with Crestor technical guidelines and shop drawings. | Improper on-site installation, structural settlement, or frame distortion caused by external building forces. |
| Daily Operation & Wear | Functional defects occurring under standard usage and recommended maintenance conditions. | Abuse, severe physical impact, neglect, or lack of routine cleaning in hostile operating environments. |
| Component Integrity | Defective original Crestor factory components, factory gaskets, and hardware mechanisms. | Third-party hardware or modifications added after dispatch without written factory authorization. |
| Environmental Impact | Premature coating failure or extrusion breakdown under normal atmospheric exposure. | Damage resulting from natural disasters, extreme chemical exposure, or unapproved acidic cleaners. |
Every window and door order undergoes rigorous multi-point testing in our 100,000 m² manufacturing plant before loading into sea containers.
Extrusion density & PA66 strip verification
Precision tolerance checks within ±0.05 mm
Corner cold-welding & gasket seal alignment
Air, water & wind pressure compliance check
Coating thickness, glass clarity & color match
Corner guards, protective film & crate security
We provide dedicated engineering support to minimize project downtime and streamline international warranty inquiries.
Our engineering team guarantees a response to technical inquiries, shop drawing revisions, or warranty assessments within 12 hours.
Key replacement components, handles, lock bodies, and hardware kits are stocked in-house and dispatched within 7 business days for quick air shipping.
Comprehensive CAD drawings, step-by-step installation guides, and high-definition instructional videos are supplied for seamless local installation.
Contact the Crestor Door engineering team at [email protected] for swift evaluation, custom specifications, and shop drawing verification.
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