1.Pay attention to the using environment , can not be too wet, it's better to use in a  
ventilated and dry environment.
2. The ground is EVA material,when you clean it ,you can put some detergent and
 a few disinfectant in the water,and use dry cloth to wipe it.
3. The soft package surface is PU, PVC materials, don't use wet cloth to wipe.when you clean it,you can use clear water without anything,then use more dry cloth to wipe it.
4. Daub oil in the connection of bearing and motor
5. Avoid contacting with some objects which may make the surface dyed for a long time
 (such as magazines, other leather, etc...) http://www.qilongplay.com/