Zhangjiagang Ruizhi Ultrasonic Technology Co., Ltd. is a collection of R & D, design in one of the professional manufacturers of ultrasonic cleaning machine, located in a developed, beautiful and rich Chinese eastern coastal area, the national health and civilized city-Zhangjiagang with Shanghai to the East, West, South and bordering Nanjing and Jiangsu. The area, water and land transportation is well developed. We have advanced technology, high-quality imported components, raw materials ...