Ningbo Zhongwang Electronics Scientific Technology Co.,Ltd (Ningbo Sanjiang Ultrasonic Equipment Factory) was set up in the 1980s.Through the persistent effort, constant innovation and absorption of the world advanced ultrasonic techology, the factory has developed and produced such series of equipments as the ultrasonic plastics welder, metal welder and cleaning machine with the high standard and fine quality.

Sanjiang Ultrasonic adheres to the objective of “creating first –class products and operating with excellent credit”. It ensures the products to be technologically advanced designed. The raw materials are selected to ensure internal quality of the products ,and the key parts are adopted from the famous imported products. The whole production process has a strict, scientific management system.

Sanjiang Ultrasonic has now set up a complete system covering the design, production, sales and service after sale of both standard and non –standard products. The marketing and service network is extending with each passing day, and offices have been set up in some areas of our county. Our products have been exported many countries of the world.