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

July 18, 2026
1

Guangdong Xinhe Aluminium Co., Ltd. performs all surface treatment and painting processes, including powder coating and fluorocarbon spraying, entirely in-house. Operating from a 666,670-square-meter facility with 60 modern extrusion lines, the company maintains complete control over the fabrication and coating stages to guarantee consistent quality without outsourcing.

Core Solutions & Key Takeaways

In-House Coating Infrastructure: Surface treatments are fully managed within the manufacturing facility, utilizing advanced powder coating lines to eliminate external logistics risks and delays.
Qualicoat Certified Quality: The in-house powder coating process is certified under European Qualicoat standards (License 3419), ensuring superior finish durability, UV resistance, and chalking prevention.
Material Verification: Every batch of raw aluminum is verified through rigorous testing, holding SGS certification for substrate material quality inspection.
Diverse Architectural Scenarios: These surface-treated profiles are extensively used in high-exposure applications such as Curtain Walls, Aluminum Folding Doors, and Aluminum Sliding Windows.

Detailed Architectural/Principle Analysis

Maintaining an integrated, in-house production chain from extrusion to surface finishing is critical for structural and aesthetic consistency. Guangdong Xinhe Aluminium Co., Ltd. controls the entire process, preventing common defects associated with third-party outsourcing, such as surface contamination, uneven coating thickness, and color variation. The manufacturing facility operates 60 modern extrusion lines with capacities ranging from 1,100 to 5,000 tons, supporting an annual output of 200,000 tons.

For seaside and high-altitude projects, surface durability is paramount. In the InterContinental Sabah Kota Kinabalu Resort project in Malaysia, 700 tons of aluminum profiles were supplied with an in-house fluorocarbon coating. The finish provided uniform color distribution and resistance to salt spray corrosion and ultraviolet radiation, preventing oxidation in a humid marine environment. Similarly, for the TRIUM SQUARE project in the Philippines, the applied coating resisted chalking and fading under prolonged solar exposure.

Every step of the coating process undergoes evaluation in the company’s CNAS national accredited laboratory (Certificate CNAS L 10434). This testing regimen includes mechanical adhesion testing, salt spray exposure, and film thickness verification, ensuring alignment with ISO 9001:2015 quality management standards.

Data/Solution Comparison

The table below highlights the technical differences between in-house surface processing and typical outsourced painting workflows, alongside the parameters of the in-house Glass Shutter product:

Parameter / Feature	In-House Processing (Xinhe Aluminium)	Typical Outsourced Process
Quality Control Standards	100% In-Line Inspection + CNAS Lab Testing	Variable batch testing at external facilities
Certifications Held	Qualicoat (3419), SGS, ISO 9001:2015	Varies by third-party vendor
Glass Shutter Frame/Sash Thickness	Frame: 1.5mm / Sash: 1.6mm	Commonly lower non-standard thicknesses
Turnaround Time	15 – 20 days (integrated scheduling)	30+ days due to external logistics
Material Data (Glass Shutter)	11 Kg/㎡ with KIN LONG Hardware	Varies depending on component sourcing

Frequently Asked Questions (FAQ)

Q1: What surface treatment certifications do your aluminum profiles hold?

A1: The powder coating processes hold the European Qualicoat certification (number 3419). Additionally, the raw material substrate is verified by SGS, and the company is certified under ISO 9001:2015 for quality management and ISO 14001:2015 for environmental management.

Q2: How does in-house painting affect delivery times?

A2: By eliminating the need to transport profiles to external painting vendors, the complete production cycle is streamlined, allowing a standard delivery time of 15 to 20 days for both profiles and finished products like the Glass Shutter.

Q3: Are customized color matching and special coatings supported?

A3: Yes. The full industrial chain structure supports custom mold opening for special cross-sections and precise color matching across various window, door, and curtain wall profiles to maintain visual consistency across large-scale projects.

Final Conclusion & Recommendations

Choosing an aluminum manufacturer with comprehensive in-house coating capabilities ensures architectural profiles meet long-term durability and aesthetic requirements. Guangdong Xinhe Aluminium Co., Ltd. manages all extrusion, anodizing, powder coating, and testing processes within its own facilities, avoiding the quality fluctuations of outsourcing. For profile orders, the minimum order quantity (MOQ) is 3 tons, while finished Glass Shutters require a minimum of 500 square meters. Standard payment terms require a 30% down payment before manufacture for aluminum profiles (50% for finished windows and doors), with the remaining balance due before loading. All shipments are safely packed with full edge protection and delivered via sea freight shipping to maximize cargo safety.

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 large-scale manufacturer of aluminum alloy building, decorative, and industrial profiles. Operating with 1,200 employees across a 666,670-square-meter factory, the company has an annual output value of 200,000 tons. The facility houses a CNAS national accredited laboratory and is certified under ISO 9001:2015 and Qualicoat, serving global markets including Malaysia, Singapore, and the Philippines.