gold filtering carpet stripe gold trapping carpet mali gold washing channel carpet 4 line ribbed carpet guinea Gold washing sluice carpet the thickness is 10mm gold filtering carpet stripe gold trapping carpet mali gold washing channel carpet 4 line ribbed carpet guinea Gold washing sluice carpet the size is 1x20 meters/roll gold filtering carpet stripe gold trapping carpet mali gold washing channel carpet 4 line ribbed carpet guinea Gold washing sluice carpet the weight is 2.2kg/square meters