... 2.Size: Dia.54mm -110mm 3.Amplitude ratio: titanium mould for ultrasonic welding machineGr1,Gr2,Gr3,Gr4, 1.Frequency ... etc7. Shape:Bar, Ladder, Round bar, Exponential, Catenary, Guassian and other composite structrue8. Application:Chemical, Petroleum, Plastic Welding, Metal ... Test:Provide Bao Ti Center Physical and Chemical Test Report or Northwest Institute For Non -ferrous Metal Research Test Report ...