Qingdao CXD Marine Valve Manufacturing Co., Ltd.---formerly known as Qingdao Xinyan Metal Casting Co., Ltd. which specialize in manufacturing cast iron, cast steel, bronze marine valve and air vent head according to JIS/DIN Standards . Marine valve workshop from rough casting, production and processing, assembly of finished products has been formed pipe lining.Our factory has formed an assembly line from casting blank products to processing and assembly of products