1)50ml water base ink 2)OEM order is welcome 3)ASTM D4236 test standard confirmed 4)water based ink,no oil 1)water based ink,can be washed easliy2)OEM order is welcome3)ASTM D4236 test standard 4)water based ink,without oil, with sponge on the header1pcs/color box ,12pcs/shrink ,144pcs/carton stamp pad ink