Headquarters Shenzhen chaojie Technlogy Industrial Co.,LTD established in was founded in 2016 by an engineering and technical team leader with more than 20 years in the ultrasonic cleaning machine industry.  The factory is located in Shenzhen, the first special economic zone city in China.  It has three floors of independent plant and standardized production workshop.  Covers an area and more than 8,000 square meters