The SUN YEH brand, originating from Taiwan, has been dedicated to researching, manufacturing, and selling control valves since 1986, accumulating over 30 years of practical experience. Initially acting as a mainland agent, SUN YEH Control Valve Group Co., Ltd. was established in 2014 in Tsingtao's High-tech Zone.    SUN YEH's primary products include control valves, self-operated pressure relief valves, gate valves, globe valves, butterfly valves, check valves, and ceramic ball valves. It operates as a high-tech enterprise integrating R&D, production, manufacturing, and sales, with a registered capital of 10.8 million yuan and a production area of 13,000 square meters.    The company has obtained ISO quality management system certification, TS certification, metrology certification, and SIL safety certification. Additionally, its factory is equipped with an automatic processing system, professional testing system, simulation system for valve working conditions, and specialized selection software.