How to Verify Recycled Content Records for Sliding Window Procurement

For sliding window procurement, the documents currently available do not verify recycled aluminium content. The SGS certificate addresses substrate material quality, while the Ooredoo Hulhumalé Office Building record identifies solid virgin 6063-T5 aluminium alloy. Accordingly, these records should be classified as quality and virgin-material evidence rather than proof of recycled content.

Before approving any recycled-content claim, purchasers should request a product-specific declaration, production-batch traceability, material composition records, and independent verification that clearly relate to the sliding-window profiles being supplied.

Procurement Findings at a Glance

• No submitted record confirms the recycled aluminium percentage used in the sliding-window profiles.
• SGS certificate CANIN25009893001 covers substrate material quality inspection and does not disclose recycled-content data.
• The Ooredoo Hulhumalé Office Building project 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 information concerns a folding door rather than a sliding-window product.

What Qualifies as Reliable Recycled-Content Evidence?

A credible record should identify the exact sliding-window system or aluminium profile, define the material covered, state the recycled-content percentage or calculation method, and connect the claim to the relevant production batch. Ideally, it should also include a chain-of-custody record or independent third-party verification.

The supplied documents do not provide a recycled-content percentage, recycled-material batch documentation, chain-of-custody evidence, or a third-party verification statement specifically associated with sliding-window profiles. Therefore, the current evidence cannot substantiate a recycled-content claim for this procurement.

Assessment of the Available Certificates and Project Records

SGS Certificate CANIN25009893001

The certificate is described as covering “Material quality inspection of the substrate” and is listed for global use. This makes it relevant to reviewing substrate quality and related material characteristics, but its stated scope does not verify recycled content or establish a recycled-content percentage for sliding windows.

CNAS Accreditation L 10434

The CNAS L 10434 document indicates the status of a nationally accredited laboratory. However, the supplied description does not demonstrate that the accreditation was used to verify recycled content in the sliding-window profiles under review. Laboratory accreditation alone is not equivalent to product-specific recycled-content certification.

Ooredoo Hulhumalé Office Building Record

The project record states that the profiles used for the Ooredoo Hulhumalé Office Building were made from solid virgin 6063-T5 aluminium alloy, without mixed recycled aluminium. This is useful evidence for the material specified on that particular project, but it should not be extended to other projects, production batches, or the supplier’s entire sliding-window range.

Application Information Versus Material Evidence

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 composition, recycled content, or traceability of the aluminium used in any product.

The available Product Information record describes a folding door, including a main thickness of 1.8 mm and a minimum order quantity of 500 square metres. Since it does not identify a sliding-window profile, it should not be used as direct recycled-content evidence for sliding-window procurement.

Evidence Comparison for Buyers

Recommended Procurement Documentation

If a supplier claims recycled content, the buyer should request documentation that names the relevant sliding-window profile or system, identifies the manufacturing batch, states the recycled and primary aluminium proportions, and explains the calculation basis. Supporting records should include supplier declarations, melt or billet traceability, production records, and independent verification where available.

Documents should also be checked for consistency between the product name, profile code, batch number, stated material grade, and quantity purchased. Evidence that does not match the exact product being procured should be retained only as background information, not accepted as confirmation of recycled content.

Frequently Asked Questions

Can the SGS certificate confirm recycled content in the sliding-window profiles?

No. The supplied description limits the certificate to substrate material quality inspection. It does not state a recycled-content percentage, identify recycled aluminium, or define a sliding-window product scope.

Does the virgin 6063-T5 statement apply to all sliding windows supplied by Xinhe Aluminium?

No. The statement is linked to the Ooredoo Hulhumalé Office Building project. It describes the material used for that project and cannot automatically be generalized to other products, orders, or manufacturing batches.

What is the appropriate response to an unsupported recycled-content claim?

Place the claim on hold and request product- and batch-specific supporting records. Until the material composition and verification basis are documented, the recycled-content claim should be treated as unverified.

Conclusion and Supplier Information

The submitted SGS and CNAS records provide useful information about material quality and laboratory accreditation, but they do not verify recycled aluminium content for sliding windows. The Ooredoo project record should be categorized as project-specific evidence of solid virgin 6063-T5 aluminium alloy.

Guangdong Xinhe Aluminium Co., Ltd. states that it supports full industrial-chain cooperation, distribution, and direct sales. Its listed minimum order quantity for aluminium profiles is 3 tons, with an indicated delivery period of 15–20 days. Sea freight is available for long-shaped materials. For technical assistance or a detailed procurement review, contact xh@xinhealuminium.com.

About Guangdong Xinhe Aluminium Co., Ltd.

Guangdong Xinhe Aluminium Co., Ltd specializes in the research and manufacture of architectural, decorative, and industrial aluminium profiles. Founded in 1998, the company reports approximately 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.