Frequently Asked Questions (FAQ)

Doorreme Aluminum Industry Co., Ltd. is a direct source manufacturer established in 2004. Our 123,000 m² production complex in Foshan, China houses advanced aluminum extrusion processing, precision CNC machining, double-glazed glass assembly lines, and severe weather performance testing rigs. By working directly with our factory, international buyers receive transparent pricing, direct technical drawing reviews, and complete quality traceability across all custom window, door, and curtain wall orders.

Our quality assurance protocol spans four strict inspection phases: raw aluminum profile wall thickness verification, surface finish adhesion testing (PVDF and powder coating), hardware cycling checks, and full air/water tightness inspection of assembled units. Final products undergo pre-assembly alignment checks prior to export packaging. Third-party international inspection agencies such as SGS, TUV, or Intertek are fully supported upon customer request.

Every commercial or residential order is assigned a dedicated senior facade engineer. We provide comprehensive CAD elevation drawings, structural joint section details, exploded 3D component views, step-by-step PDF manuals, and high-definition installation videos. For large-scale commercial curtain walls or complex engineering projects, our technical specialists can provide remote digital guidance or on-site engineering coordination.

Yes. Our in-house engineering team works directly from your architectural elevation plans, structural opening schedules, or CAD drawings. We optimize aluminum profile wall thickness, glass thermal configurations, opening mechanisms, and structural anchoring methods to meet your project's target wind-load codes and architectural aesthetics.

Selection depends on structural requirements and project design. UPVC profiles provide good basic thermal insulation at a lower material cost for standard residential openings. Extruded aluminum alloy profiles deliver significantly higher tensile strength, enabling ultra-slim sightlines, expansive glass panels, superior structural wind pressure resistance, enhanced security protection, and high color longevity under intense UV exposure.

Non-thermal break aluminum frames offer a cost-effective solution for tropical climates or interior partitions where temperature differentials are minimal. Thermal break aluminum systems feature precision-engineered polyamide (PA66 GF25) insulating strips inserted between inner and outer aluminum profiles. This structural thermal barrier significantly reduces heat transfer, improves soundproofing, prevents interior frame condensation, and reduces HVAC energy costs by 10% to 30% annually.

Doorreme Aluminum Industry Co., Ltd. manufactures double and triple insulated glass units (IGUs) utilizing automated warm-edge spacer bars filled with active molecular sieve desiccants. The units are double-sealed using primary polyisobutylene (PIB) sealant and secondary structural silicone. Sealed units prevent moisture ingress and internal fogging, with optional argon gas injection available for enhanced thermal performance.

Yes. Custom aluminum profile cutaways, thermal break corner samples, color finish swatches, and hardware mechanism kits are available for architectural evaluation and client presentation. Express freight fees are calculated based on destination.

To prepare an itemized engineering quote, please submit:

• Window and door schedule drawings or wall opening dimensions.
• System preference: Thermal break or non-thermal break aluminum.
• Glass build-up requirements (e.g., 5mm+20A+5mm double tempered, Low-E coating, laminated safety glass).
• Surface finish (PVDF coating, fluorocarbon spraying, powder coating, or anodized finish).
• Hardware preferences (German Roto hardware or top-tier commercial brands).

Standard architectural profile colors and standard window models require a production lead time of 15 to 20 business days. Fully customized window schedules, specialized powder coat finishes, or complex unitized curtain wall packages require 30 to 55 business days following final production drawing approval.