Why Our White Board Is Shiny and Our Green and Black Boards Are Not

Our spec sheet lists gloss as 88–95 GU (white) · 10–16 GU (green and black). Buyers ask which number is "correct". Both are — the ranges describe two different jobs.

What GU means

A glossmeter bounces light off the surface and measures how much comes straight back. 90 GU reflects like a polished table; 12 GU scatters it, so there is no mirror to catch. Same steel, same double coating — the difference is the topcoat, and the reason is the room the board ends up in.

Gloss white: markers and bright rooms

Ink sits on top of a hard, smooth film, so it wipes off with less ghosting — even after hundreds of erase cycles. Under even ceiling light it reads bright and clean.

Best fit: offices, meeting rooms, showrooms — markers, no projector.

Matte green and black: rooms with screens

Aim a projector at a 90 GU board and the beam bounces straight back into the audience's eyes. A 10–16 GU finish breaks that reflection up, so the image stays readable and text stays legible from the side of the room.

Best fit: classrooms and training rooms with projectors, halls near windows, control rooms.

How to choose, in one sentence

Light reaching the board from a projector or window? Matte. Standing alone under ceiling lights? Gloss.

Lighting varies from building to building, so we send a free A4 sample first — hold it under your own lights, write, wipe, and the choice makes itself.

One order, both colours

Our 2-ton MOQ applies to the order, not each colour: a ton of gloss white for the offices, a ton of matte green for the classrooms, cut to your sizes and shipped on the same pallets.

Tell us your room types — we will tell you what the split looks like in tonnage and panels.

*— Yueyang Technology, Bazhou, Hebei. Write to us — David Hu, General Manager.*