Composite fences have become one of the most in-demand outdoor building materials in global markets such as the United States, Canada, the UK, Australia, and the European Union. As the need for low-maintenance, eco-friendly, and long-lasting fence systems continues to grow, composite fence factories in China have emerged as major suppliers to global distributors, wholesalers, engineering contractors, and large retail chains.

This article provides a comprehensive overview—from factory production process, quality control, raw materials, specifications, certifications, packaging, logistics, and wholesale cooperation models—to help global buyers understand how a composite fence factory operates and what quality indicators matter most before importing.

Overview of Composite Fence Manufacturing (Global Demand & Market Trends)

Composite fencing is generally made from a blended formula of WPC (Wood Plastic Composite), reinforced plastics, and stabilizing additives. These materials are extruded into panels, boards, posts, and caps, forming a durable fencing system that is weather-resistant and easy to install.

1.Rapid global growth

According to industry forecasts, the global composite fence market is expected to grow at 6–8% CAGR from 2025 to 2030, driven by:

• Accelerated adoption of low-maintenance outdoor materials
• Government policies promoting recycled and eco-friendly products
• Rising demand for modern residential and commercial fencing
• Increasing distributor interest in ready-to-assemble OEM products

2.Why China’s factories dominate supply

China’s composite fence factories are preferred worldwide because they offer:

• Mature extrusion technology
• Cost-efficient large-scale production
• Stable material sourcing
• Custom mold development
• Strong OEM & ODM capabilities
• Flexible mixed-container shipping

For wholesale buyers, understanding a factory’s production capabilities is the key to sourcing high-quality, stable, and compliant composite fencing.

Composite Fence Factory Production Process (Step-by-Step)

A professional composite fence factory typically follows a strict production system. Below is the complete workflow used by leading manufacturers.

1.Raw Material Selection & Mixing

Composite fence formulas usually include:

Factories with strict QC often use:

• A-grade wood powder
• Virgin HDPE
• Automated material batching systems

This ensures consistency for every batch of composite boards.

2.High-Temperature Extrusion

Extrusion molding is the core of composite fence manufacturing.

Steps include:

Feeding the mixed raw materials into the extruder

Heating and melting the composite material at 160–200°C

Passing the molten material through customized extrusion molds

Continuous forming into:

• Fence boards
• Fence panels
• Fence posts
• Capping profiles

Modern factories use:

• Twin-screw extruders
• Automatic temperature control
• High-speed cooling lines

This improves density, strength, and surface finish.

3.Surface Processing

After extrusion, the composite fence boards undergo finishing:

Common surface types

• Embossed wood grain
• Brushed matte finish
• Deep embossed texture
• Co-extruded (capped) layer

Co-extrusion Advantages

Co-extruded composite fences include an outer protection layer offering:

• Better UV resistance
• Anti-scratch surface
• Improved weather stability
• Longer outdoor life (10–25 years)

Factories with co-extrusion lines can supply higher-value premium fencing.

4.Cutting & Precision Sizing

Each board, post, and accessory is cut using:

• Fully automatic CNC saws
• Laser-guided measuring
• End-trimming machines

Consistency in sizing is crucial for installers and distributors because it reduces:

• Installation errors
• Material waste
• After-sales issues

5.Quality Inspection (QC System)

A reliable composite fence factory implements a strict multi-stage quality control process:

Quality Tests Include

Factories with ISO-certified labs provide the highest reliability.

6.Assembly & Accessory Matching

A complete composite fence system includes:

• Fence boards
• Horizontal rails
• Aluminum or composite posts
• Top caps
• Bottom rails
• Connection clips
• Decorative accessories

Factories often offer:

• OEM full-set systems
• Compatible accessories for global installation standards
• Customizable colors & textures

This is crucial for distributors targeting retail sales.

7.Packaging & Export Logistics

Export-ready packaging typically includes:

• Protective PE film
• Corner covers
• Palletized stacking
• Waterproof wrapping
• Printable labels with barcodes or SKU
• Container loading optimization

A good factory maximizes CBM usage to reduce freight costs.

Key Quality Indicators for Composite Fence Products

Before buying from a composite fence manufacturer, global buyers need to evaluate these critical quality benchmarks.

1.Material Purity

High-quality composite fences use:

• 70–95% composite content
• Low ash wood powder
• Virgin HDPE or high-quality recycled polymers

Low-cost factories may include excessive fillers (calcium powder), reducing lifespan.

2.UV and Color Stability

A professional manufacturer will use:

• Anti-UV additives
• Weather-resistant masterbatch
• UV-testing equipment
• Outdoor aging testing racks

This ensures color fading stays within international standards (ΔE < 5 after 2,000 hours).

3.Structural Strength

Key strength indicators:

• Density ≥ 1.20 g/cm³
• Tensile strength ≥ 15 MPa
• Impact resistance ≥ 20 KJ/m²

Strong boards resist cracking, warping, and bending.

4.Waterproof & Decay Resistance

High-quality composite fence boards absorb:

• Less than 1% moisture

This ensures:

• No mold
• No swelling
• No rot

Even in humid climates (e.g., Southeast Asia, Africa, coastal regions).

5.Co-extrusion Protection Layer

Premium composite fences include:

• 0.5–1.0 mm PE protective cap
• High scratch resistance
• 2–3× longer UV lifespan

Buyers should request co-extrusion sample testing.

Standard Specifications of Composite Fence Products

Below is a summary of typical global specifications.

1.Standard Fence Board Sizes

Thickness options:

• 15 mm
• 18 mm
• 20 mm
• 21 mm

Color options:

• Dark grey
• Light grey
• Teak
• Walnut
• Coffee
• Black
• Custom colors via OEM

2.Fence Post Specifications

Common post materials:

• Aluminum (6063-T5)
• Steel posts (galvanized)
• WPC composite posts

Common sizes:

• 50 × 50 mm
• 60 × 60 mm
• 80 × 80 mm
• 100 × 100 mm

Height options:

• 1.0 m / 1.2 m / 1.5 m / 1.8 m / 2.0 m

3.Panel Height & System Configurations

Typical system sizes:

• 6ft × 6ft (US standard)
• 1800 × 1800 mm (EU standard)
• Custom OEM configurations

Buyers can customize:

• Board spacing
• Decorative aluminum strips
• Post caps
• Footplates
• Mounting brackets

4.Certifications

High-quality factories offer:

• CE certification (EN 15534)
• REACH compliance
• RoHS testing
• ISO9001:2015
• SGS material testing

Certifications help distributors enter premium retail markets.

How to Choose a Reliable Composite Fence Factory in China

Choosing the right supplier is crucial for long-term cooperation.

1.Check Factory Scale & Equipment

A strong manufacturer should have:

• 10+ extrusion lines
• Co-extrusion production capability
• Automated batching systems
• CNC cutting lines
• In-house testing labs

Large factories maintain stable supply even during peak seasons.

2.Evaluate Raw Material Stability

Request:

• Material formulas
• HDPE testing reports
• Wood powder supplier certificates
• Additives safety reports

Stable raw materials guarantee consistent product quality.

3.Inspect Sample Quality

Key sample checkpoints:

• Texture realism
• Surface hardness
• Color uniformity
• Density weight feeling
• No bubbles or uneven surfaces
• Proper sizing tolerance

4.Review Export Experience

Factories with strong export records usually offer:

• Familiarity with CE/ASTM testing
• A stable packaging system
• Efficient loading calculations
• Flexible payment terms

5.Ask About OEM Customization

A professional factory supports:

• Custom colors
• Custom molds
• Brand engraving
• Retail packaging
• New design development

This is essential for distributors and brand owners.

Why Partner With a China Composite Fence Factory (B2B Advantages)

For wholesalers, distributors, and project contractors, sourcing from China offers major cost and supply advantages.

1.Competitive Pricing

Due to:

• Large-scale production
• Efficient raw material supply
• Optimized labor and logistics cost

Buyers can achieve 20–40% lower landed cost.

2.High Production Capacity

Large factories can produce:

• 500–1000 tons per month
• Support large project orders
• Support mixed-color production
• Support LCL & FCL orders

3.Full Range System Supply

Factories provide:

• Fence boards
• Aluminum posts
• Decorative strips
• Post caps
• Bottom rails
• Installation accessories

Buyers get a complete product portfolio.

4.Strong After-Sales Support

Professional suppliers offer:

• Installation guide
• Engineering drawings
• Marketing materials
• Product warranty (5–20 years)

Perfect for importers and retailers.

5.Custom Manufacturing for Brands

Manufacturers support:

• Custom logo
• Packaging design
• Exclusive color development
• Exclusive mold opening

Ideal for building a private-label brand.

Conclusion

Composite fences continue to grow rapidly in the global outdoor materials market. Understanding the production process, quality inspection methods, raw material standards, and international specifications helps B2B buyers make informed purchasing decisions.

A qualified composite fence factory should provide:

• Stable material quality
• Advanced extrusion technology
• Comprehensive QC system
• Strong OEM/ODM capability
• Full accessory systems
• Certification support
• Competitive factory pricing

Whether you are a distributor, retailer, construction contractor, or brand owner, cooperation with a professional Chinese composite fence factory ensures long-term stable supply and profitable market growth.