1.Totally knock-down 2.Easy assemble 3.anti-tilt equipment 4.Small package 5.Shock resistance Mass mobile shelf 1.mass shelves for library, foldable style, suitable for transportation 2.different line number and row number as reference 1. The size , clor ,thickness are all adjustable ,knocked –down structure2. Material: high quality cold-rolling sheet3. Color: anycolor is available4.Surface ...