helical furniture compressed spring 1>ISO9001&ISO14001 quality system control 2>OEM is provided as custom- ... to your design.Surface Treatment:Powder coating,neikel plating,chrome plating,zinc plating,etcUse:Widely applied in many industriesMOQ: ... compression spring, torsion spring, extension/tension spring, steel spring, hook spring, furniture spring, industrial spring, car/vehicle spring, auto ...