... :ISO9001/2000 4. all cold rolled steel 5. color:optional Mass mobile shelf 1. The size , clor ,thickness are all ... polyfoam inner lining and multi-layer carton box. Shelf: 1, mass shelves for library, foldable style, suitable for transportation 2, different ... line number and row number as reference Library Furniture/ Base mass shelvessingle line specification: 2 group3 group4 group5 groupline size 1975 ...