EMT Conduit, Strut Channel, Flexible Conduit manufacturer / supplier in China, offering Rifi High Quality Thickness 0.8-1.6mm 4"X2" Galvanized Steel Handy Box, Rifi 4"X2" Galvanized Steel Handy Box, Depth 1-1/2" and 1-7/8", Thinckness 0.8-1.6mm, 4"X2" Galvanized Steel Handy Steel Box 1-7/8"Deep with Raised Grounding Set Screw and so on.