LED Light Diffuser Profile
Dachang LED Light Diffuser Profile
Custom-extruded polycarbonate and acrylic LED diffuser covers at 82–89% transmittance — engineered to hide the diodes, matched to your channel, and built in Dachang's own tooling since 1998. A direct-from-factory LED light diffuser profile manufacturer, not a channel reseller.
- 40+ extrusion lines, Dongguan China
- In-house die & mold shop
- Low-MOQ OEM / ODM & private label
1998
Factory established
300+
Staff & own tool shop
82–89%
Light transmittance
≤500mm
Max profile section
Custom Polycarbonate LED Light Diffuser Profiles, Extruded to Your Channel
A LED light diffuser profile is the plastic lens that clips over an LED strip or aluminum channel to soften the output and hide the individual diodes. This collection groups the covers Dachang extrudes for lighting brands and contract manufacturers — clear, frosted and milky-white diffusers in polycarbonate (PC), acrylic (PMMA), PVC and ABS. Because Dachang is a custom LED diffuser cover manufacturer that owns the extrusion and the tooling, the cross-section, resin and diffusion level are all yours to specify rather than a stock item you settle for. The range covers linear LED strip diffusers, under-cabinet and freezer covers, refrigerator light lenses, UV-resistant outdoor diffusers and heavy-section rail lighting profiles — each one quoted as an OEM or private-label build, matched to the hardware you already run.
Why Buyers Choose Dachang as Their LED Light Diffuser Profile Manufacturer
Most suppliers in this market are aluminum-channel houses that buy their diffuser covers in. Dachang runs 40+ extrusion lines and cuts its own dies, so the optics, resin and cross-section are decisions you make — not a shelf item you accept. That is the practical difference between a custom LED diffuser cover supplier and a reseller.
Optics you specify, not settle for
Transmittance runs 82–89% with high haze, which hides the individual lamp beads so your fixture reads as one clean line of light instead of a row of dots. Because every LED light diffuser profile is extruded in-house, that transmittance and haze can be tuned to a physical sample you send — you are matching your own optical signature, not adopting one stock grade.
Clear, semi-transparent and milky-white diffusion
Matte or frosted surface finishes
Dot-free output at typical LED strip pitches
Reference spec — Industrial PC Diffuser
| Material | Polycarbonate Makrolon 2805 |
|---|---|
| Cross-section | 57 mm × 7 mm |
| Wall thickness | 1.5 mm |
| Unit weight | ~190 g / meter |
| Max length | Up to 6 meters |
| Surface | Origin / frosted |
Live catalogue geometry; other profiles are extruded to your drawing, up to a 500 mm section.
Named-brand resin, traceable on your job
Diffuser lifespan lives or dies on resin quality, so Dachang draws from first-line suppliers — Bayer, Sabic, Mitsubishi and Teijin — and will name the grade on your order. That traceability matters most on outdoor and appliance work, where UV-stabilised polycarbonate is the difference between a cover that holds colour for years and one that yellows in a season. Where acrylic suits the job better (higher surface hardness), your custom LED diffuser supplier extrudes that too, and flags its lower toughness so you choose knowingly.
Virgin PC & PMMA from named brands
UV-stabilised compounds that resist yellowing
Full menu: PC, PMMA, PVC, ABS, PP, PC/ABS, ASA
Flame ratings for regulated fixtures
Standard polycarbonate diffusers reach UL94 V-2; where a luminaire spec demands it, a V-0 rating is achievable at 1.6 mm or even 0.8 mm wall using high-transparency flame-retardant grades — so you meet a stricter standard without switching to an opaque cover. For rail and transit work, Dachang supplies UL94-V0 material with 850 °C radiant-element test data to support EN 45545-2 and NFPA 130 homologation files, which shortens your material-approval paperwork.
UL94 V-2 standard, V-0 on request
Operating range roughly −40 °C to 120 °C
850 °C & fire-file support for transit projects
OEM & ODM LED Light Diffuser Profile Manufacturing for Lighting Brands
The questions a sourcing manager actually asks — tooling ownership, minimums, lead time, sampling — answered plainly, because that is what closes a supplier decision.
Your drawing, our in-house tooling
Every die is designed and cut by Dachang's own engineers in an on-site tool shop, so a new diffuser cross-section never gets outsourced. Send a 2D drawing, a STEP file, or a physical sample of the channel the cover must fit, and the profile is reverse-engineered to snap into your existing hardware.
Minimums, samples & lead time
Minimum order is quoted by weight — generally from about 300 kg of finished profile per item; below that a one-time start-up fee applies rather than a flat refusal, which keeps first runs and market tests viable. A physical sample is approved before bulk so you sign off the real cover, not a spec sheet, and regular stock items ship in 1–2 working days.
Private-label & batch consistency
Covers are extruded to your colour, tint and diffusion standard and supplied unbranded for private-label programmes. Because resin, tint and surface are all set at the extrusion stage, a private-label LED diffuser profile holds the same optical signature across repeat orders instead of drifting between batches — the detail your QA team notices first.
Transparent quoting & payment
A quote is built from four inputs: resin price, cross-section difficulty, order quantity and special requirements such as flame rating or UV additives — and the larger the committed volume, the lower the per-unit rate. Payment is by T/T bank transfer, typically to the company's HSBC Hong Kong account, with multiple currencies accepted. Under-3 m lengths ship in export cartons; longer runs are crated in wooden boxes.
Compliance & Quality Assurance for Your LED Light Diffuser Profile
The assurances below are stated at the level Dachang can back up — material standards, resin sourcing and process control. Ask for documentation against your specific order and it is provided where available; if your market needs a certificate Dachang has not listed here, raise it before tooling.
UL94 flame ratings
Diffusers extrude to UL94 V-2 as standard, with V-0 achievable at 1.6 mm or 0.8 mm, and 850 °C test data for rail. Your luminaire meets its flammability requirement without redesigning the cover.
RoHS compliant & recyclable
Stock materials are RoHS compliant, recyclable and meet environmental requirements — supporting your bill-of-materials compliance and lowering end-of-life impact for the finished fixture.
CE / UL / RoHS export marking
Dachang's export listings carry CE, UL and RoHS marking on the diffuser covers, giving your import documentation a consistent compliance reference for regulated markets.
Traceable resin & sample sign-off
Compounds come from Bayer, Sabic, Mitsubishi and Teijin, and the grade is named on your job. Transmittance is matched to your reference sample before bulk, so a full run cannot silently miss the optical target.
LED Light Diffuser Profile Sourcing FAQ
Q: What is the minimum order for a custom LED light diffuser profile?
A: The minimum is quoted by weight, generally from around 300 kg of finished profile per item. If your order falls below that, Dachang adds a one-time start-up fee instead of declining, which keeps small first runs and market tests possible.
Q: Which plastics can the LED light diffuser profile be made from?
A: Common materials are polycarbonate (PC), PMMA/acrylic, PVC, ABS, PP, PC/ABS and ASA. PC is the default for an LED light diffuser profile because it pairs high transmittance with impact strength and flame retardancy; acrylic is chosen when surface hardness and optical clarity outrank toughness.
Q: How much light does a milky diffuser cover let through?
A: Transmittance runs 82–89% with high haze, so the lamp beads stay hidden while brightness stays usable. Because Dachang extrudes in-house, the transmittance of your polycarbonate LED diffuser cover can be tuned to a physical sample you provide.
Q: Can you match a diffuser to my existing aluminum channel?
A: Yes. Send a drawing, a STEP file or a sample of the channel, and Dachang's in-house tool shop cuts a die so the cover snaps into your hardware. Custom cross-sections are the norm here rather than the exception, up to a 500 mm section.
Q: Do you supply UV-resistant diffusers for outdoor and transit lighting?
A: Yes. UV-stabilised polycarbonate resists yellowing and embrittlement outdoors, and for rail vehicles Dachang supplies UL94-V0 material with fire-test data for EN 45545-2 and NFPA 130 files. Specify the environment on your enquiry and the resin and additive package are selected to match.
Q: Are the diffuser covers RoHS compliant, and what are the payment terms?
A: Yes — stock materials are RoHS compliant and recyclable, and export covers carry CE, UL and RoHS marking. Quotes are built from resin price, section difficulty, quantity and special requirements, with volume discounts; payment is by T/T transfer, usually to an HSBC Hong Kong account, in multiple currencies.
Request Your Custom LED Light Diffuser Profile Quote
Send your drawing, target transmittance and channel dimensions. Dachang confirms material, flame rating and tooling, samples before bulk, and ships regular items in 1–2 working days — so you approve the physical LED light diffuser profile, not just a spec sheet.
We are professional LED light diffuser manufacturers and suppliers in China since 1998. Welcome to buy high quality customized LED light diffuser made in China from our factory.