
Uniform light, no hotspots
PP Diffuser Sheet
Polypropylene optical diffuser sheet for LED fixtures — even light distribution, extruded from 100% virgin material.
- 0.3–2.0 mm
- Transmittance 20–80%
- Sheet or roll

PP / PS optical diffuser sheet · Lighting components
A source factory in Zhongshan, Guangdong, extruding optical diffuser sheet for 15+ years: 0.3–2.0 mm, 1.22 × 2.44 m standard sheets, flat panels or rolls, made only from virgin material — no regrind, no fillers.
Product range
Thickness, size, colour and light transmission are all open to custom order — the standard sheet is 0.3–2.0 mm thick and 1.22 × 2.44 m, with flat panels and rolls available.

Uniform light, no hotspots
Polypropylene optical diffuser sheet for LED fixtures — even light distribution, extruded from 100% virgin material.

High clarity, precise diffusion
Polystyrene diffuser sheet with a cleaner optical surface, for premium luminaires and displays.

Rigid, printable, recyclable
General-purpose extruded PP sheet for signage, printing, packaging, appliances and battery protection boards.

For folders, covers and files
PP sheet and board grades for stationery converters — folders, covers, dividers and report files.
Manufacturing capability
Four PP lines and three PS lines run continuously in Henglan Town, Zhongshan. Capacity is stable enough for long-term volume contracts, and flexible enough for non-standard sheet.




Surface finishes
Surface texture decides how a fixture reads: soft and glare-free, or crisp and decorative. Every pattern below is extruded in-house.

Both faces matte — the softest, most glare-free diffusion for panel and office lighting.
Thickness 0.5–1.8 mm

One face matte, one face smoother, for fixtures that need an even glow on one side only.
Thickness 0.5–1.8 mm

The standard matte surface — the workhorse finish for general diffuser sheet.
Thickness 0.5–1.8 mm

Polished surface for a cleaner look and higher light output.
Thickness 0.8–2.0 mm (full range)

Hexagonal prism pattern that breaks up the light into an even, decorative texture.
Thickness 0.8 mm and above

Fine diamond weave with a subtle, fabric-like surface.
Thickness 0.8 mm and above
Special grade
Environmentally friendly, halogen-free sheet rated to UL94 V-0 for luminaires and electrical parts that have to meet fire requirements.
Certification support: tell us the standard your market requires — UL94 V-0, RoHS, REACH, GB — and we produce to that specification with third-party testing arranged per order.

About Yongshang
Yongshang has been extruding PP and PS sheet for more than 15 years from Henglan Town, Zhongshan City, Guangdong. Our focus is optical diffuser sheet, general plastic sheet extrusion and custom processing — and we run the whole process ourselves rather than buying sheet in.
Every batch is produced from 100% virgin material: no regrind and no fillers. That is why purity, colour and light transmission stay consistent from the first metre to the last, and why our customers’ own production lines stay predictable.
More about the factoryGrades developed for LED panel lights, suspended linear lights, office and edge-lit fixtures, with the diffusion matched to your light source.
Non-standard size, colour, thickness, transmission and surface finish. Send a drawing or a sample and we extrude to it.
Seven automatic lines and steady capacity let us hold long-term programmes with dependable lead times, batch after batch.
Our mission
Stay focused on sheet extrusion, keep the craft honest, and give customers stable, high value-for-money material with service they can rely on.
Our vision
Keep deepening our craft in plastic sheet extrusion and become a benchmark supplier in the industry.
Applications
Most of our volume goes into optical diffusion for lighting. The same extrusion lines serve appliances, medical displays, signage and custom-cut sheet.

LED panel lights, suspended linear lights and surface-mount ceiling lights.

Even diffusion for troffers, panels and linear office fixtures.

Stable diffusion for control panels and equipment displays.

Uniform backlight behind readouts, buttons and indicators.

Smooth surface, high light uniformity, translucent and non-transparent.

Anti-glare diffusion for illuminated traffic signs and light boxes, cut to size.

Sheet or roll supply with custom length and width, built for mass orders.

Even green illumination with an anti-glare matte surface, custom-cut to size.

PP board for folders, covers, dividers and report files — supplied to converters.
Samples & quotations
Thickness, size, colour, light transmittance or a halogen-free V-0 grade — tell us what the fixture needs and we will come back with the matching sheet, a quotation and freight options for West, South and Southeast Asia, Central Asia and Eastern Europe.
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+84 813 313 838