Design, Manufacture and Sales of Instrument Manifolds & Hand Valves: Flanged Valves Needle Valves Gauge Valves Block Valves Airheaders Tube Fittings Accessories SUSTECH's quality policy is: To design & manufacture to accepted national & international standards To ensure 100% component compliance in order to attain the recognition of being a competent manufacturer with dependable installation characteristics & unmatched durability.