The special sintered wire mesh are classified two types. One type is that several layers of plain woven wire mesh and perforated metal are sintered together. The other is that several layers of plain woven wire mesh are sintered together. The former enjoys the advantages of superior permeability and high mechanical strength. The latter has the characters of good permeability, low pressure drop, high accuracy and easy to wash?The other constructions are also produced according to customer's requirement.