31230000-7 Parts Of Electrical Distribution Or Control Equipment (Transmission Mechanisms, Sliding Suspensions, Double Suspensions, Input Wedges, Output Wedges, Curve Holders, Clamps, Input Terminals, Insulators, Longitudinal-Carrying Cable Suspension Units, Trolley Arrows, Tires, Arrow Crosses, Overall Slats, 2-Screw Clamps, Bracket Fastening Nodes, Two-Shoulder Hangers, Intersections, Reverse Fasteners, Inserts For The Clip) (EXPIRED)