Profile: Ningbo SUPU Electronics Co. Ltd. is a manufacturer of Spring-Cage Terminal Blocks & Connectors. We are an ISO 9001:2000, RoHS, and CE certified company. Our products include Spring-Cage Terminal Blocks, Screw Terminal Blocks, PCB Terminal Blocks, Female/Male Connectors, Transformer Terminal Blocks, Mini Terminal Blocks, Pushwire Connectors for building installation, modules, and marking tools. Our products are applied in a wide range of industries including electricity, petroleum, railway, shipbuilding, elevator, chemical engineering, and various others. 2-Conductor Through Terminal Blocks With Fixing Flanges are mounted on SP35 standard rail (steel or aluminum). They are easy to operate, only need a screw driver. It features reliability, shock resistance, and maintenance-free.