United States Fisher Fisher valve distributor in China (Shanghai DS Yuan Fluid Technology Co.) US Fisher Fisher valves provide time-tested and innovative solutions to help customers reduce maintenance costs, reduce capital requirements, reduce compliance process costs and improve availability. This will be achieved through world-class products, including:? Fisher control valves, Fisher regulator, Fisher instrumentation and performance of services, which are in the process control industry's most reliable products??. United States Fisher Fisher valve distributor in China (Shanghai DS Yuan Fluid Technology Co.)