... , light weight. 4)high/low temperature resistance. titanium wires for glasses frame Material: Gr1,Gr2,Gr5,Gr7,Gr9 Specification:0.5 ... -6.0mm Certification:ISO9001:2000titanium wires for glasses frameMaterial:Gr1,Gr2,Gr3,Gr5,Gr5 ELI,TA1,TA2,TC4 ...