1.spare part:markers,adaptor,duster,chain,hook,cloth 2.the size and shape can be OEM 3.low power consumption can save money 2012 alibaba wholesale children art led writing board [What is led writing board] Led writing board ---- Transparent toughened glass, the transmittance rate reached 99%, not broken, no radiation,strong brightness, high hardness, with no scratches for many years, easy to ...