China Double Square Adapter manufacturers Our Factory Zhejiang Heyue Flowtech Co., Ltd. was established on 2006 and focus on designing and manufacturing automatic control valves and actuators, such as pneumatic actuators, electric actuators, pneumatic accessories (positioner, limit switch box, solenoid valve, air filter regulartor and manual override etc.), pneumatic control valves, motorized control valves and some customized control valves. We develop and design the actuators by our own R&C team, after years developing, we built excellent reputation in the automatic valves industry worldwidly, our clients are located in Five Continents and more than Sixty Countries. Our Product Our pneumatic actuator, electric actuator, pneumatic accessories, pneumatic valves and motorized valves with excellent performance can be widely used in oil and gas, oil refining, petrochemical, chemical, electric power and energy, air separation, paper making, pharmaceutical and other industries, "provide pneumatic and electric valves and actuators with efficiently and exclusively" has always been the eternal pursuit of us. Our Certificate Our Service 1. Strict QC System We have been engaged in production of pneumatic actuators, electric actuators, pneumatic accessories (positioner, limit switch box, solenoid valve, air filter regulartor and manual override etc.) , pneumatic control valves and motorized control valves for more than 15 years, we have strict quality control system, we can assure every valves and actuators we produced are tested. 2. Direct Manufacturer We’re one direct manufacturer and doing exporting. 3. Exports To The World Our goods export to more than 60 countries, and more than 500 customers all over the world. 4. Free OEM Production 5. Short Production Time 6. Best After-sale Service We have professional after-sales service team, which consist of five people, and each has more than three years experience. If you have any questions after you receive the cargo, you can call us all day. China Double Square Adapter manufacturers website:http://www.heyuevalveactuator.com/ website2:http://www.valveactuatorfactory.com/