... works,FOB,C&F,CIFpayment term: T/T, L/C at sightsample lead time: within 7 days delivery time: 15-20 ... appliances, telecommunication, communication, aviation, space and other civil fieldsFeatures: 1) Torsion spring of ultra fine wire with wire diameter less than 0 ... .1mm 2) High precision 3) Different torques4) Suit price spring steel torsion spring from china supplier