1) High precision 2) High tension 3) High resilience 4) Competitive price Wire diameter0.1mm-4.5mmMaterialadopt the domestic and imported swc, sus, swp, ... , heat-resistant steel wire, duplex stainless steel wire(corrosion resistant and heat resistant steel wire), bronze, copper, phosphorus copper, beryllium copper ... % balance remitted when see the copy of B/LOEM available high voltage switch spring