EMT Conduit, Strut Channel, Flexible Conduit manufacturer / supplier in China, offering Square 4"X4"X1-1/2" Metal Junction Box UL Standard with Screw Hole 1/2" and 3/4", UL Certified Galvanized Steel Set Screw EMT Coupling Connector for EMT Conduit, High-Quality M8 Galvanized Threaded Rods for Industrial Use and so on.