... can achieve a good result in processing such as placer gold, tantalum,niobium,titanium,tungsten,iron,tin... High quality ... tooth Wave Ladder Jig is raised by Sn:3.01%, W:5.5%, Pb:1.63%, Zn:2.04%; ... can achieve a good result in processing such as placer gold, tantalum, niobium, titanium, tungsten, iron, tin, hematite, copper, ... in our workshop: High capacity Hengchang JT series Gold ore jigging machine