... :from 0.01-3.0mm Remote control battery spring with double coil(Samples Welcomed ) 1.Material:carbon steel,piano steel,SUS,plated ... ,spectrum analyzer device imported from Germany,vacuum melting furnace,CNC machine center...8Test Euipmentspectrum analyzer, Physio-chemicalLabora tory9Production lines1) The lost ... the RoHS standards (SGS test Remote control battery spring with double coil