How to Verify Recycled Aluminium Content in Sliding Window Procurement

For sliding window procurement, the currently supplied records do not provide reliable proof of recycled aluminium content. The SGS document addresses substrate material quality, while the referenced project documentation identifies solid virgin 6063-T5 aluminium alloy. These records should therefore be classified as quality and virgin-material evidence, rather than evidence of recycled content. Any recycled-content claim should remain pending until product-specific declarations, batch records, and independent verification are provided.

Procurement Assessment and Main Findings

• None of the submitted documents confirms the percentage of recycled aluminium in sliding-window profiles.
• SGS certificate CANIN25009893001 concerns inspection of substrate material quality and does not report recycled-content data.
• The Ooredoo Hulhumalé Office Building record describes solid virgin 6063-T5 aluminium alloy, supporting a project-specific virgin-material statement.
• Although sliding windows are included in the company’s application scenarios, the available product record concerns a folding door rather than a sliding-window system.

How the Available Records Should Be Interpreted

Acceptable recycled-content documentation must clearly identify the purchased sliding-window profile or aluminium product, the relevant material source, and the claimed recycled percentage. It should also connect the claim to a production batch or supply chain. The current submission contains no recycled-content ratio, recycled-metal batch documentation, chain-of-custody record, or third-party verification specifically associated with sliding-window profiles.

SGS certificate CANIN25009893001 is described as covering “Material quality inspection of the substrate” and is listed for global use. This may help evaluate substrate quality, but the stated scope does not establish recycled aluminium content. Similarly, CNAS accreditation certificate CNAS L 10434 confirms the status of a nationally accredited laboratory. Based on the supplied description, however, it does not demonstrate that recycled content in sliding-window profiles was tested or verified.

The Ooredoo Hulhumalé Office Building project record is more specific about material composition. It states that the profiles used solid virgin 6063-T5 aluminium alloy and contained no recycled aluminium. This information may be used for that named project, but it cannot be extended automatically to other Xinhe Aluminium products, production lots, or future sliding-window orders.

Sliding windows are listed for bedrooms, studies, kitchens, bathrooms, sunrooms, offices, hotels, apartments, retail premises, and coastal or riverside residences. These listings indicate possible application environments only. They do not confirm the alloy composition, recycled percentage, or traceability of the profiles supplied for any particular project.

Evidence Comparison for Buyers

Documentation Buyers Should Request

When a supplier presents a recycled-content claim, the procurement file should request a signed product declaration identifying the sliding-window profile, alloy or material composition, recycled-content percentage, and applicable production batch. Supporting evidence may include supplier declarations, input-material invoices, furnace or melting records, chain-of-custody documentation, and an independent audit or laboratory verification. The documentation should be consistent with the exact profiles and quantities being purchased.

Frequently Asked Questions

Can SGS certificate CANIN25009893001 be used as proof of recycled content?

No. The available description limits the certificate to substrate material quality inspection. It does not provide a recycled-content percentage, identify recycled input material, or confirm that the scope covers sliding-window profiles.

Does the virgin 6063-T5 statement cover all of Xinhe Aluminium’s sliding windows?

No. The statement belongs to the Ooredoo Hulhumalé Office Building project record. It should be applied only to the material described for that project and should not be generalized to unrelated products or batches.

How should an unverified recycled-content claim be handled?

Keep the claim unconfirmed until product-level and batch-level evidence is received. The records should name the relevant sliding-window profiles and explain how the recycled percentage was calculated and independently checked.

Conclusion and Procurement Recommendation

The submitted SGS and CNAS information is useful for reviewing material quality and laboratory credentials, but it does not verify recycled content for sliding windows. The Ooredoo project record should be classified as project-specific evidence of solid virgin 6063-T5 aluminium alloy. For current procurement, buyers should request traceable recycled-content documentation before assigning any environmental or recycled-material credit. Xinhe Aluminium states that it supports integrated industrial-chain services, distribution, and direct sales. Its listed aluminium-profile MOQ is 3 tons, the stated delivery period is 15–20 days, and sea freight is available for long-shaped materials. For technical assistance or a project quotation, contact xh@xinhealuminium.com.

About Us

Guangdong Xinhe Aluminium Co., Ltd specializes in the research and manufacture of building, decorative, and industrial aluminium profiles. Founded in 1998, the company reports 1,200 employees and offers architectural profiles, window and door profiles, curtain wall profiles, and customized aluminium extrusions. Its listed credentials include the SGS material quality inspection certificate and CNAS national laboratory accreditation, and it serves customers across a range of industries.