Conductor: Use Strandaed Silver-Plated Or Tinned Copper; Insulation:Fep, PFA, Or Low Smoke Halogen-free; Jacket: Silicone, Medical Grade TPU, Flame-resistant polyethylene, TPE Or LowSmoke Halogen-Free; Application: used for internal and external links of Ultrasonic Diagnostic Devices, Fetal heart B ultrasound, Black and White B ultrasound and Doppler ultrasound .