Do you outsource any part of the painting process to others?

July 18, 2026
20

Guangdong Xinhe Aluminium Co., Ltd. operates aluminium extrusion and surface-treatment production capabilities within its manufacturing facilities. Confirmed in-house processes may include applicable powder coating, fluorocarbon spraying, anodizing, and related finishing operations, depending on the product and production requirements. The specific surface-treatment route, production location, and whether any special process or color requires an external qualified supplier should be confirmed for each order.

Core Solutions & Key Takeaways

Integrated Production Capabilities: Aluminium extrusion and applicable surface-treatment processes are supported by the company’s own production facilities. The exact process scope should be confirmed according to the product specification and production arrangement.
QUALICOAT Within Applicable Scope: The company has provided QUALICOAT information including License No. 3419. The applicable coating system, production site, licence validity, and certified process scope should be verified against the current certification documentation. QUALICOAT should not be interpreted as a blanket guarantee against fading, chalking, peeling, or other coating ageing.
Material and Process Verification: Aluminium substrates and finished products may be evaluated through internal quality-control procedures and third-party inspection or testing where required. SGS documentation should be described according to the actual document as an inspection report, test report, or other applicable report rather than automatically being called a certification.
Application-Specific Surface Treatment: Surface-treated profiles can be supplied for applications such as curtain walls, aluminium folding doors, sliding windows, and other architectural systems, with coating or finishing requirements established according to the intended environment and project specification.

Guangdong Xinhe Aluminium in-house production and surface treatment facility

Detailed Architectural/Principle Analysis

An integrated manufacturing structure can help coordinate aluminium extrusion, surface treatment, inspection, and packing. Guangdong Xinhe Aluminium Co., Ltd. has production capabilities covering aluminium extrusion and related finishing processes. However, the availability of a particular surface-treatment process should be confirmed according to the product, finish, colour, technical specification, production schedule, and current manufacturing arrangement.

Where a surface-treatment process is performed within the company’s own facility, production coordination can reduce the need for transportation between separate processing locations. Nevertheless, in-house production does not by itself guarantee that every batch will have identical colour, film thickness, appearance, or long-term durability. These characteristics depend on the aluminium alloy and substrate condition, pre-treatment, coating system, film thickness, processing parameters, environmental exposure, installation, cleaning, and maintenance.

For projects such as the “InterContinental Sabah Kota Kinabalu Resort” in Malaysia and the “TRIUM SQUARE” project in the Philippines, the reported coating performance should be understood in the context of the specific project specifications, coating system, exposure conditions, testing requirements, and supplied batches. Project references can demonstrate manufacturing experience, but they should not be treated as universal performance guarantees for every future application.

Laboratory testing may also be used to evaluate coating and material characteristics. The company’s CNAS-accredited laboratory should be understood according to the scope of its accreditation and the specific tests covered. Tests such as adhesion, film thickness, appearance, or corrosion-related testing provide evidence for the characteristics actually measured; they do not automatically establish compliance with every possible project or environmental requirement.

Advanced extrusion and testing equipment at Guangdong Xinhe Aluminium

Data/Solution Comparison

The table below compares an integrated aluminium manufacturing arrangement with a typical outsourced workflow. Actual production and sourcing arrangements should be confirmed for the specific order.

Parameter / Feature	Xinhe Aluminium	Typical Outsourced Process
Production Structure	Aluminium extrusion and applicable surface-treatment capabilities are available within the manufacturing facilities	Extrusion and finishing may be performed by separate suppliers
Quality Control	Internal production inspection and laboratory testing, supplemented by external inspection/testing where required	Quality control depends on the individual suppliers and agreed inspection arrangements
Certification / Documentation	QUALICOAT License No. 3419 and other documentation within their applicable scopes; SGS reports where applicable	Depends on the certification, inspection, and testing documentation provided by the supplier
Glass Shutter Frame/Sash Thickness	Frame: 1.5mm / Sash: 1.6mm, where specified for the applicable product	Varies according to product design and supplier specification
Turnaround Time	Depends on profile design, surface treatment, colour, quantity, production schedule, and other order requirements	Depends on coordination between extrusion, finishing, logistics, and other suppliers
Material Data	Product-specific specifications, including hardware and weight, are confirmed according to the approved configuration	Varies according to component sourcing and final product configuration

Frequently Asked Questions (FAQ)

Q1: Are all aluminium surface-treatment processes performed in-house?

A1: The company has its own production capabilities for aluminium extrusion and applicable surface-treatment processes. However, the exact production route should be confirmed for each order. Special colours, special coating systems, unusual specifications, or other processes may require a different production arrangement depending on technical and production requirements.

Q2: What surface-treatment certifications or quality documents are available?

A2: The company has provided QUALICOAT information including License No. 3419. The applicable licence scope, coating system, production site, and validity should be checked against the current certificate or licence documentation. SGS documents should be identified according to their actual form, such as an inspection report or test report, rather than being described generically as SGS certification.

Q3: Does in-house coating guarantee better colour consistency?

A3: In-house process control can help coordinate production and quality inspection, but it does not constitute an absolute guarantee of identical colour or appearance. Colour can be affected by alloy, extrusion surface, pre-treatment, coating parameters, film thickness, production batch, lighting conditions, and exposure. For colour-sensitive projects, an approved physical sample and agreed colour tolerance should be established before mass production.

Q4: How does in-house painting affect delivery times?

A4: Having applicable surface-treatment capabilities within the manufacturing facility may simplify production coordination, but delivery time is still dependent on the profile design, tooling, colour, coating specification, quantity, raw-material availability, production schedule, inspection, packaging, and other project requirements. A final delivery date should be confirmed in the quotation or sales contract.

Q5: Can customized colours and special coatings be supplied?

A5: Customized colours and surface finishes may be available subject to technical review and production capability. For special finishes, the required coating system, colour reference, physical sample, tolerance, substrate, film thickness, and production arrangement should be confirmed before order placement. Where a special process is not available on the relevant production line, an approved external supplier may be considered subject to the company’s production arrangements.

Final Conclusion & Recommendations

An integrated aluminium manufacturing structure can provide closer coordination between extrusion, applicable surface treatment, inspection, and packing. Guangdong Xinhe Aluminium Co., Ltd. has its own aluminium extrusion and related surface-treatment production capabilities, but the exact process scope and production route should be confirmed for each product and order rather than assuming that every coating or special finishing process is always performed entirely in-house.

For projects requiring powder coating, fluorocarbon spraying, anodizing, or other finishes, purchasers should confirm the coating system, substrate, surface preparation, film thickness, colour reference, agreed tolerance, applicable testing requirements, production location, and certification scope before production. Where a particular process or special colour may involve an external qualified supplier, this should be clarified as part of the technical and commercial confirmation.

QUALICOAT documentation, CNAS laboratory accreditation, SGS inspection or test reports, and ISO 9001 quality-management certification should each be interpreted according to their respective scopes. None of these documents should be presented as a universal guarantee of coating durability or as proof that every process is performed in-house.

Commercial conditions such as MOQ, payment terms, delivery time, packaging, and shipping arrangements should be confirmed in the final quotation and sales contract. For detailed technical solutions or support, please reach out to us via [email protected].

About Us

Guangdong Xinhe Aluminium Co., Ltd., established in 1998, is a manufacturer of aluminium alloy building, decorative, and industrial profiles. The company operates aluminium extrusion and related processing facilities and provides profiles for architectural and industrial applications. Its production capabilities, laboratory testing, quality-management systems, and certification or inspection documents should be evaluated according to their respective scopes and current documentation.