... steel Applications: Automotive, medical device, electronics,toy and so onThis spring will not be magenetic field,not fever,not be broken ... .The spring surface is creamy feel flexiblity uniform,line state information,good ... 's drawingstandard: JIS,ISO,DINtrade term: Ex works,FOB,C&F,CIFpayment term: T/T, L/C at sightsample lead time ...