Electrical Steel Conduit, Gi Slotted Channel, Gi Trunking manufacturer / supplier in China, offering 20mm&25mm&32mm Steel Stocks & Die Set for Conduit Threading, Malleable Iron Conduit Distance Saddles HDG/E-Galv. 32mm BS4568, One Gang 3*3 Steel Switch and Socket Gi Box 16mm Hight and so on.