4 line mining carpet 4 channel carpet gold ribbed carpet gold dust mining carpet pp channel gold mining carpet the thickness is 10mm 4 line mining carpet 4 channel carpet gold ribbed carpet gold dust mining carpet pp channel gold mining carpet the size is 1x20 meters/roll 4 line mining carpet 4 channel carpet gold ribbed carpet gold dust mining carpet pp channel gold mining carpet the weight is 2.2kg/square meters