Ultrasonic connection technology is also widely used in the field of battery production to ensure the best electronic conductive connection, from the welding of copper and aluminum foil materials inside the battery cell, to the welding of high-current connectors and electronic components of the outer module, it may be the electric car you are driving. Cars, refrigerators and air-conditioning systems in everyday life are equipped with refrigeration circuits made of copper tubes, which are cut and welded air-tight at the same time by ultrasonic welding, thereby sealing the refrigeration circuit. DONGHO ultrasonic metal welding can always accompany you in your life.