China is still a top sourcing spot for aluminum windows, entrance doors, sliding systems, folding doors, and curtain walls. Purchasers find a wide product range here. They also get flexible customization and low production costs. However, the huge number of window manufacturers makes choosing a supplier hard. This is very true when items must pass foreign building rules.
A big part of the Chinese window and door industry sits in Foshan, Guangdong. This city offers a strong support network. It covers aluminum profiles, glass processing, hardware, and seals. It also includes powder coating, machinery, packaging, and logistics. Such a full industrial chain lets manufacturers get parts quickly. They can create custom products easily. They can also manage production well for both home and business projects.
Price by itself does not reveal the true worth of a window or door. Many details change the final outcome. These include aluminum thickness, thermal break design, glass, and hardware. Drainage, testing, packaging, and installation support matter too. This guide lists ten well-known manufacturers. It serves as a helpful sourcing reference. It is not an official ranking.
Top 10 Window and Door Manufacturers in China
These manufacturers help different types of customers. Some focus mostly on the local retail market in China. Others work heavily on custom projects or global trade. The list below is not a ranking based on quality. Purchasers need to compare the product type and certification. They should also look at design, export experience, and order size. Budget and after-sales support require careful review as well.
1. PHONPA
PHONPA started its business in Foshan in 2007. It focuses on premium system windows, doors, and curtain walls. The brand also works on noise reduction and whole-home residential solutions. This company runs a huge local dealer network. It holds a strong spot in the high-end home improvement market across China.
2. OUNA
OUNA is a Foshan-based manufacturer. It makes premium aluminum windows and doors for home and business projects. The firm brings together custom design and integrated manufacturing. It offers performance-focused products alongside international supply support. This factory is a good fit for buyers. It works well for those who want matched window and door solutions from a single production partner.
3. FUSON
FUSON opened in 2002. It supplies whole-home aluminum window and door products. The business pairs its manufacturing with a huge retail and dealer network inside China. Overseas buyers need to check a few details first. They should confirm export documents, packaging, and production times. They must also ask about the firm’s international project experience.
4. PAIYA
PAIYA began operations in 1990. It blends research, production, marketing, and service together. The team focuses heavily on high-end aluminum systems and comfortable residential spaces. This company runs several production bases. It also enjoys a very wide presence in the local market.
5. Doorwin
Doorwin is quite active in international markets. It supplies custom window and door solutions. The product range covers many materials and opening styles. Buyers must check the current test reports carefully. They need to make sure these match the exact frame, glass, size, and hardware in their order.
6. Derchi
Derchi is located in Foshan. It focuses on safety system windows and doors. The products highlight strong locking systems and anti-pry details. They also focus on water control and residential security. International buyers should review the export documentation. They must also check the testing records and installation support.
7. Bucalu
Bucalu, works on high-end system windows and architectural applications. The brand pays close attention to energy performance and weather resistance. It also values modern design and technical service. This makes it useful for specification-led projects.
8. Sunhohi
Sunhohi is a Foshan manufacturer. It serves the premium residential market. The product range includes windows, doors, sunrooms, and whole-home solutions. Export buyers need to confirm the certification scope. They should also check the packing standards and production times. Asking about destination-market service is a smart step too.
9. MOSER China
MOSER China is known for energy-saving wood and wood-aluminum window systems. These items often fit projects that need high insulation. They also provide a warmer interior appearance. Buyers should compare the required maintenance and finish durability. They must also confirm the overall climate suitability.
10. HENNISSY
HENNISSY is based in Foshan. It supplies aluminum windows, doors, sunrooms, and entrance systems. Overseas buyers must confirm market-specific testing details. They should also look at the glass and hardware options. Checking production lead times and installation guidance is essential. Finally, they need to verify the after-sales service.
From Product Selection to Project Delivery
Selecting a manufacturer is only the beginning of an international window and door project. Buyers also need accurate drawings, suitable configurations, stable production, clear quality control, protective packaging, and technical support. These stages become more important when a project includes custom sizes, several opening types, large panels, or market-specific performance requirements.
OUNA provides this coordinated support through an integrated design and manufacturing structure.
Integrated Manufacturing and Custom Design
OUNA has 16 years of industry experience and operates a modern manufacturing facility covering more than 100,000 square meters. At OUNA, we connect product design, custom engineering, manufacturing, and quality control so that project information can move clearly from the first drawing to final production.
Our customization process covers more than frame color. We can adjust opening size, frame depth, profile structure, glass composition, sash division, screens, finishes, hardware, drainage, thresholds, and opening direction.
Buyers may provide architectural drawings, window schedules, or opening measurements. Our team reviews this information and prepares product drawings for approval. Dimensions, viewing direction, opening method, glass, finish, hardware, and installation details should be confirmed before production begins.
Our manufacturing knowledge covers profile processing, cutting, corner assembly, surface treatment, glass tempering, insulating-glass production, hardware fitting, and final assembly. Managing these connected stages helps us control how the aluminum, glass, seals, drainage, and hardware work together.
Windows and Doors for Different Projects
The OUNA complete product range serves villas, apartments, hotels, and commercial buildings. Buyers can coordinate several product categories through one manufacturer, reducing the risk of mismatched colors, hardware, glass, sightlines, and technical details.
Our aluminum window systems include casement, sliding, awning, tilt-and-turn, fixed, folding, hung, and skylight options. Depending on the series, available features may include thermal break profiles, insulating tempered glass, narrow frames, multi-layer seals, integrated screens, concealed drainage, and reinforced mullions.
For patios, balconies, terraces, and large indoor-outdoor openings, our aluminum door systems include sliding, folding, and casement configurations. Project teams can select panel arrangements, tracks, glass, handles, locks, finishes, thresholds, and opening directions according to the building design.
OUNA also supplies entry and pivot door solutions for projects where security and architectural appearance are equally important. Dimensions, panels, glass, finishes, handles, and locking systems can be coordinated with the wider building design.
Performance and International Support
OUNA products may use double tempered insulating glass, laminated glass, low-e glass, thermal break profiles, multi-point locks, reinforced hardware, safety limiters, integrated screens, and controlled drainage.
The correct configuration depends on the climate, panel size, solar exposure, wind conditions, security needs, external noise, and local building regulations. A coastal villa may need stronger corrosion protection and drainage. A cold-climate home may require greater attention to thermal breaks, insulating glass, spacers, and seals.
Large sliding or folding panels require suitable rollers, tracks, hinges, locks, and structural support. These parts should be selected according to panel dimensions and glass weight rather than appearance alone.
Our company and service information lists standards or certifications such as NFRC, CE, AS2047, CSA, and ISO. Requirements vary by market, so buyers should confirm which documents apply to the selected product series and destination.
We support international customers through consultation, custom design, manufacturing, quality control, packaging, and global supply. Our products and services reach clients across more than 50 countries. Where local installation service is unavailable, we can provide drawings, manuals, videos, and online technical guidance.
How to Compare Window Manufacturers
Send the same technical specification to every shortlisted supplier. Without a common document, quotations cannot be compared fairly. One supplier may include better glass and stronger hardware, while another may appear cheaper because important items are missing.
Ask each company to state:
- Frame: Aluminum alloy, profile thickness, frame depth, reinforcement, and thermal break details.
- Glass: Thickness, cavity, low-e coating, spacer, gas fill, lamination, and safety treatment.
- Hardware: Roller capacity, hinge limits, locks, handles, fasteners, and replacement parts.
- Testing: Air, water, wind, thermal, acoustic, corrosion, and safety results.
- Delivery: Drawings, production time, inspection, packaging, shipping, warranty, and installation support.
For large orders, arrange a factory inspection or live video review. Examine profile cutting, corner assembly, glass production, seal installation, hardware fitting, finished-product testing, packaging, and container loading.
Conclusion
China offers many capable window manufacturers, and Foshan is a major production center because its aluminum, glass, hardware, finishing, packaging, and logistics industries work closely together.
PHONPA, OUNA, FUSON, PAIYA, Doorwin, Derchi, Bucalu, Sunhohi, MOSER China, and HENNISSY serve different market needs. OUNA is particularly suitable for buyers seeking premium aluminum systems, broad product choice, detailed customization, integrated manufacturing, and international project support.
Before selecting a supplier, compare the exact profile, glass, hardware, tests, drawings, packaging, and warranty. Confirm local compliance before production and approve a sample for important projects. A careful technical review protects the budget better than choosing by price or reputation alone.
FAQs
Q: Why are many window manufacturers located in Foshan?
A: Foshan has a mature supply chain for aluminum, glass, hardware, finishing, packaging, and logistics.
Q: Does OUNA manufacture custom windows?
A: Yes. We customize dimensions, glass, finishes, profiles, hardware, screens, and opening styles.
Q: What should buyers check before importing windows?
A: Check drawings, tests, glass, hardware, packaging, local codes, installation guidance, and warranty coverage.
