The 2638-square-meter workshop has its own machining department and production line, focusing on R&D and production of customized and industrialized automatic instruments, providing complete set of customized solutions to create high-quality instruments. Among them, our dead weight tester has been well received in overseas markets, used a lot in national lab and large project site ,our pressure transmitters also very hot sell in the United States, UAE ,India and other countries .Besides ,the submersible level transmitter is our best-performing products, with a reorder rate of 99%. Yunyi established and improved the quality assurance system like IS09000 and obtained CE, explosion proof ,SIL 2 , EMS and OHSMS and other product certifications.