NamePortable aluminium frame whiteboard or green blackboardSize45cm×60cm50cm×70cm60cm×80cm60cm×90cm67cm×100cm75cm×120cm85cm×148cm90cm×150cm100cm×200cmColorWhite, Green, Cream-colored plateCertificateIS09001, IS014001,IS018001,SGS, CE, 3CMaterialInner:seven layers high density corrugated paperFrame:high strength aluminium alloy, which is covered with champagne color coatingChalkrail:strongly linked with the writing board in a mosaic way.Frame corner:PPSpecific1.Easy to write: it is smooth, homogenenous,line obvious with the ordinary chalk or polymer dustless chalk.2.Easy to clean:there is no obvious residue with eraser and is not any residus with wet duster cloth.3.Wearproof:there is no obvious change of force of friction after 10,000 times scrub or in five years' average use.4.Appearance:the writing board is flat without ripple, chap, bubble, balckspot and concave-convex.5.Tag: there is a tag with factory name, factory address, manufacturing number and date of manafacture on the surface of each writing board.Suit OccationsChildren painting, home, office.PackagecartonQuality Guarantee period3 years