Opal / Milky White Diffusers
PC & PMMA LED Light Diffuser Solutions
From custom drawings to mass production, we extrude high-clarity, light diffusion, and anti-yellowing plastic covers for linear, architectural, and commercial LED lighting fixtures.
50%
Faster Tooling Development
80%
Lower Mold Cost Investment
100%
Assembly Fit Test Passed
ISO
9001:2015 Certified
10+
Plastic Extrusion Facilities
In-house Tooling
Fast Turn Around
Materials
Premium PC & PMMA
Trust By
why manufacture light diffuser with EXLONG?
At 3ERP, our reliable rapid prototyping services have served many customers representing different phases of the aerospace industry over a decade. We can quickly create aerospace part prototypes and our production systems can produce parts in small, batch, or large-scale quantities with high quality standards and affordable price.
Bespoke Design & Engineering
Need a custom PMMA tube for a specific application? Our team works closely with you to design and manufacture profiles that perfectly fit your unique requirements.
In-House Tooling & Development
From initial CAD design to the final mold trial, our engineering experts provide guidance every step of the way, ensuring 13+ years of reliability.
Premium Materials & Precision
Our custom profiles are crafted from brand-name PC and PMMA, ensuring superior optical clarity, UV resistance, and consistent quality.
Cost-Effective OEM Solutions
Get high-performance custom profiles through our optimized manufacturing process. Our competitive pricing ensures excellent value for your investment.
Skilled and experienced
We have been manufacturing aerospace parts for over a decade and our skilled engineers know how to get the best outcomes from your designs.
Easy quotation system
Our engineers will review your designs immediately to provide a fast and accurate quotation for the project.
Custom Plastic LED diffuser manufacturing with EXLONG
Making high-quality LED diffusers and profiles requires great optical precision and premium materials. With years of experience in custom plastic extrusion, EXLONG delivers reliable linear optics and housings for any complex project. We run strict quality and light transmittance checks to ensure every part meets your exact needs. Contact us today for a quick quote on your custom toolings and designs!
What kind of LED diffusers can we make?
EXLONG specializes in manufacturing high-quality plastic extruded linear LED diffusers and profiles. With advanced co-extrusion technology and premium PC/PMMA materials, we deliver tailored optical solutions with high light transmittance and excellent glare control to meet your specific project needs.
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Advanced in-house tooling for your extrusion molds
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Precision Turning
Used to machine high-precision round components, guide pins, and core parts for extrusion molds.
CNC Drilling
Creates precise assembly holes and deep cooling channels to ensure optimal temperature control during production.
Wire Electrical Discharge Machining (Wire EDM)
Use advanced EDM tech to cut high-precision extrusion dies and intricate mold shapes with micron-level accuracy.
Mold Storage & Management
All custom toolings are securely stored, numbered, and maintained in our warehouse for quick setup and seamless reorders.
Material Selection Guide: PC vs. PMMA for LED Light Covers
Selecting the proper plastic raw materials optimizes both optical efficiency and thermal durability. Use our comparison matrix below to determine whether Polycarbonate (PC) or Acrylic (PMMA) best fits your fixture's operating environment and regulatory requirements.
| Property | Polycarbonate (PC) | Acrylic (PMMA) | Best Choice | Notes |
|---|---|---|---|---|
| Price | Higher | Lower | PMMA | PMMA is a more economical choice for large-scale projects. |
| Light Transmittance | Excellent, typically 85%-90% | Outstanding, typically over 92% | PMMA | PMMA is known as "plastic glass" due to its superior light transmission, though PC is sufficient for many applications. |
| Refractive Index | Approx. 1.586 | Approx. 1.49 | PC | PC's higher refractive index allows for the design of thinner, lighter lenses. |
| Yellowing Resistance | Poor | Good | PMMA | PC tends to yellow over time when exposed to UV light, which affects optical performance. UV additives are often required. |
| Haze | Low | Extremely Low | PMMA | PMMA has very low haze and a high-gloss surface, providing exceptional visual clarity for high-end lighting. |
from engineering to volume extrusion process
completely tailored solution
Step 1
Design Review
& Engineering Feasibility
& Engineering Feasibility
Evaluate customer drawing (2D/3D) and specifications to confirm manufacturability and optimize the extrusion process
Step 2
In-house Tooling
& Optical Design
& Optical Design
Design and make the precision extrusion mold and calibrate the optical grade diffuser for light transmittance
Step 4
Pilot Run
& Process Validation
& Process Validation
Perform a small batch pilot run to stablize all process parameters and finalize production setting for consistancy
Step 3
Trial Run
& First Article Inspection
& First Article Inspection
Conduct trial extrusion to produce and test samples for dimension, fit, and light transimittance
Step 5
Mass Production
& Volume Extrusion
& Volume Extrusion
Execute high volume production using strict inline quality control with automated monitoring systems
Step 6
Quality Inspection
Global Logistic
Global Logistic
Apply final quality check, secure packaging, and manage reliable delivery under agreed terms
Custom Extrusion Solutions: Leading LED Diffuser Factory in China
Partnering with a reliable plastic extrusion manufacturer in China should be simple. At EXLONG, we back your lighting projects with decades of specialized engineering experience and a fully equipped, modern facility. We streamline the entire process under one roof—from material selection and custom mold design to the final shipping of production-ready profiles. By working directly from your CAD drawings or 3D blueprints, our team guarantees rapid prototyping, strict quality control, and on-time delivery to keep your project schedules perfectly on track.
LED Extrusion FAQs
Optical Clarity, Material Selection, & Standards
What materials can be coextruded?
A wide variety of thermoplastics can be coextruded, including (but not limited to) ABS, PVC, polycarbonate, acrylic, polyethylene, polypropylene, and thermoplastic elastomers (TPEs).
What are the advantages of coextrusion?
Enhanced performance: Combining materials for specific properties.
Cost-effectiveness: Using less of a more expensive material by combining it with a cheaper one.
Design flexibility: Creating complex profiles with varying characteristics.
Improved aesthetics: Adding color or texture to specific areas of the profile.
What are some common applications of coextruded profiles?
Common applications include: window and door frames, seals and gaskets, automotive parts, lighting diffusers, consumer goods, and medical devices.
How is the coextrusion process different from regular extrusion?
Regular extrusion uses a single material, while coextrusion uses two or more materials fed into a single die, bonding them together during the extrusion process.
Can coextruded profiles be recycled?
Recycling can be more complex with coextruded profiles, as the different materials need to be separated. However, some coextruded profiles can be recycled depending on the materials used and the recycling infrastructure available.
How do I choose the right materials for a coextruded profile?
Material selection depends on the specific application requirements, including:
Mechanical properties (strength, flexibility)
Thermal properties (temperature resistance)
Chemical resistance
Weatherability
Cost
What are some design considerations for coextruded profiles?
Design considerations include:
Material compatibility
Layer thickness
Profile shape and complexity
Bond strength between layers
How much does coextrusion cost?
The cost depends on the complexity of the profile, the materials used, and the production volume.
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+8615816998103
LOCATION
No.5 Changxing Avenue East, Jun’an Foshan
528329 Guanggong China