shelf-rack:The manufacture of slotted angles,racks,shelves,corner plates,bolts and nuts,etc 1.the sizes of racks are 30cm x 90cm*0.4mm 30mm*90mm*0.6mm 40cm x 90cm*0.6mm 50cm x 90cm*0.8mm 60cm x 90cm*0.7mm 30cm x 100cm*1mm 40cm x 100cm*0.9mm50cm x 100cm)1mm etc.2.The thickness from 0. 4mm to 1. 00mm 3.the colours canbe gray, white and brown ,etc