material for torsion springs
stainless steel, spring steel, carbon steel, 65Mn, music wire torsion springs surface treatment
chrome,zinc,nickel,gold,silver plating,black oxided, paint spraying torsion springs certificate
torsion springs appliance
automotive,electrical equipment, household appliances, furniture torsion springs category
compression springs, compressed springs, coil springs, spiral springs terms of payment for torsion springs
T/T, D/P,D/A, L/C, WESTERN UNION,Paypal torsion springs means of transportation
sea transportation, air transportation, railway transportation torsion springs export countries
USA, Canada, England, Australia,New Zealand and so on