Model: RoundMaterial: 12L14, 12L15, 12L13, SUM24L, SUS303, S416 of, S430FThread type: NoneFinish: electroless nickel, bright nickel, trivalent blue zinc, color zinc, black zincProduction equipment: high-precision automatic lathes, cam walking effortAuxiliary processing: ultrasonic cleaning machine, vibration grinding machines, centerless grindingInvolving areas: desktop computers, sheet metal, control cabinet, LCD TV, home appliances, circuit boards, printers, copiers