... (Chinese standard steel), SS304, SS316 & SS316L,FRP or GRP,Aluminium alloy • Electro zinc plated- for indoor use to BS EN 12329 ... . Three types according to different materials: the GI type, A luminum alloy type and FRP type3. Three types according to different usages ... , cold zinc dipping, hot dipped galvanizing, nickel zinc-plating and alloy.With our comprehensive product line , any type of cable tray ...