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Zhejiang Oudelong Automatic control Valve Co., Ltd. is a set of industrial automation control system engineering, manufacturing, sales, service in one of the professional R & D and production: pneumatic, hydraulic, electric drive devices and automatic control valve supporting products. Widely used in petroleum, chemical, light industry, power station, metallurgy, HVAC, medicine, fire, and water treatment and other pipeline equipment fields. The company's electric actuators are mainly divided into "ODL" and "OHQ" two series. ODL series is mainly switching type and regulating type (not explosion-proof); OHQ series is mainly divided into explosion-proof type, adjustable type (explosion-proof), intelligent integration.