... refrigeration,freezer etc passed ISO9001 quality system 6.35*0.65mm copper coated steel tube1)material:bao steel tube, other material ... :SPHC,DHG,tang steel etc; 2)other structure:Φ8*0.65mm, Φ8*0.6mm,Φ8*0.5mm,Φ4.76*0 ... .65mm,Φ4.76*0.6mm, Φ4.*0.5mm etc; 3)packing ...