... per custom-design 3>EXW price. helical compression spring for chairDetailed description: 1) Spring Wire Diameter: 0.08~ ... 12.0mm2) Spring Type: Compression spring for chair. 3) Main material: High carbon steel, spring steel ... appliances, telecommunication, craft, toys ,locks,stationery,furiture ,washing machines,vacuum cleaners,lamps and lanterns,bicycles,sports equipment ,etc12) Packing ...