... be used for seaborne ship under sea 30meters,with limit switch IP68 Hangzhou Flowtecal Automatic Control Valves Manufacturing Co., ... is a joint venture by previous Hangzhou Flyking Pneumatic Actuators& Valves Maker Co., Ltd, Flowtecal Group UK and ... The pneumatic cylinders, hydraulic cylinders, pneumatic actuators, hydraulic actuators, solenoid valves and hydraulic stations that we’ve researched and ...