adjustable aerobic step customized colors step PP material SGS and ISO , ... friendly weight capability: 250kg 1. Material: PP2. Size: 72x36.5x15cm , adjustable : 10cm , 15cm3. Color: green , gray, black , red ( customized color when ... the client approve the PP sample 630pcs , 20 feet container1300pcs , 40 feet container1600pcs , 40 feet HQ container We can produce many kinds of ...