1,liquid chalk pen 2,sze:130*18mm 3,material is plastic 4,eco,fancy,cheaper Payment: 30% deposit ,70% balance against B/L copy.. 'New'products characteristic(1): It's easily written and erased, it can be cleaned with dry cloth and leaves no track(2): The Dustless liquid chalk (can call: Chalk/liquild pen/refillable pen/marke pen ^) is suitable for writing and drawing on green/white/LED boards, as ...