Shanghai Shanggao Valve Group Co., Ltd. is a manufacturer of valves (API gate valves, JIS globe valves, JIS check valves, DIN globe valves, DIN bellow globe valves, API ball valves and other valves) with well-equipped testing facilities and strong technical force. With a wide range, good quality, reasonable prices and stylish designs, our products are extensively used in petroleum, petrochemical, chemical engineering, boiler, smelting, biology, war, biochemistry, civil defense, pharmacy, shipbui