whiteboard its widely used in school and office board. We make whiteboard in steel coil for process small writeboard.it has big market in it. Thickness0.1 to 0.4mm , width 1000,1200mm .our greenboard is the surface material for writing board, it used in processing small board in school and office. It has good market in educational office field. Each coil weight: 3-5 TonInner diameter: 508mmOne 20 container: 6-7 coils ,around 25 tonDelivery time : 14 days after received depositPackage: wooden pallets, packaging suits sea transportation