SUNYEA.SUNYEA is a valve manufacturing company established in Shanghai in 2004. The materials used in its products are extremely diverse, covering carbon steel, stainless steel, alloy steel, and various special alloys, such as WCB, CF8M, LCB, MONEL 400, and HASTELLOY C4. The valve specifications cover a wide range, with pressure ratings from 150 lb to 2,500 lb (PN 1.0–42.0 MPa), operating temperatures from –196°C to 850°C, and nominal diameters from 3/8 inch to 72 inches (10 mm–1,800 mm). Drive types include manual, gear, electric, pneumatic, and hydraulic. Products are designed and manufactured in strict compliance with major international and domestic standards, including API, ANSI, ISO, BS, JIS, DIN, NF, GB, JB, HG, and SH. The main product lines include ball valves, butterfly valves, gate valves, control valves, hydraulic valves, oxygen valves, PTFE-lined valves, globe valves, check valves, pressure-reducing valves, and vent valves.