... .,ltd is the large-scale professional ultrasonicequipment production enterprise in china,but also the earlist take part in ultrasonic plastic welding ... 40k,35k,28k,20k,15k and other sections of the high precision welding equipment,and in accordance with market demand,we ... panels,meter,highlights,bumpers and other special welding machine, at the same time,for the customers demand,we design ed all kinds ...