... is different). 3.The surface condition of Aluminum Gas-Liquid Filters : the flat-type mesh surface and pressed into a corrugated bellows ... the different specifications) 4.The common width of Aluminum Gas-Liquid Filters : 40mm, 80mm, 100mm, 150mm, 200mm, 300mm, 400,500 ... mm, 600mm, etc.. 5.The main material of Aluminum Gas-Liquid Filters : Aluminum wire,stainless steel wire, galvanized wire,fibre wire ...