Established in 2010, Yunyi has the resource advantages of Xi’an instrument industry, constantly introduces advanced production equipment and testing instruments like fully automatic GE pressure controller. Over ten years of steady development, Yunyi now has a strong independent R&D and production team,which developed a tuning fork density meter that can replace imported brands, with sales up to 20 units per time and received unanimous praise from customers. Meanwhile ,80% of our staff with more than 5 years Professional and effective international business experience , offer good communication and better service.