Gravity sorting equipment hi a siamnaah hian copper, silver, tin, tungsten, tantalum, niobium, titanium, zirconium, primary ore leh chromium placers te sort nan an hmang nasa hle.
1999-a hman mek medium . Jig machine hi tui a ni thei a, tui chu sorting medium atana hman a nih chuan hydraulic jigging an ti bawk.Kan jig concentrator te hi pulsating water flow hmanga thuam an ni a, hei hian hman dan hrang hrangah separation accuracy a ti tha hle.