Profile: Ningbo Hi-Tech Smart Pneumatic Co., Ltd. specialized in manufacturing all kinds of hydro pneumatic components, aluminum parts and plastic parts. Our main products are pneumatic cylinder, pneumatic actuator, solenoid valve, air filter, air regulator, air lubricator, pneumatic & hydraulic fitting, tubes and muffler. Our rotary hand lever valve is a manual three-position and four way valve with hard seal or soft seal structure. It can control airflow direction & drive pneumatic application with little operative force, good seal and long life. Our hand and foot valves include foot valve, hand draw valve and 4H hand lever valve. Our mufflers are widely used on solenoid valves, pneumatic cylinders and actuators. Our AL lubricator provides good lubrication for pneumatic system, with novel structure and easy adjustment of oil drip.