This group will display all the cylinders we have, such as Airtac cylinders, ASCO numatics cylinders, SMC, Festo and so on. If classified by type, we have SC, SI, SU, DNC, MAL, CA, SDA, ADU, ADVU, CU, MGP, XHL2, CY, STM, TN, MA, MB, SDA, CXS and so on. In addition, we also have many cylinder kits, front cover, back cover, piston rod, barrel and so on. Pneumatic pressure in the compressed gas can be converted to mechanical energy pneumatic actuators. There cylinder reciprocating linear motion and reciprocating swing types. Reciprocating linear motion of the cylinder can be divided into single-acting cylinder, four kinds of double-acting cylinders, diaphragm cylinders and impact cylinders. ① Single-action cylinder: Only one end of the piston rod from the piston side of the gas supply polyethylene to produce pressure, pressure pushes the piston thrust extends by spring or weight returned. ② Double-action cylinder: piston alternately from both sides of the gas, in one or two directions output force. ③ Diaphragm cylinder: The diaphragm instead of a piston, the output force only in one direction, with spring return. It's good sealing performance, but a short trip. ④ impact cylinder: This is a new element. It is the pressure of the compressed gas can be converted to kinetic energy of the piston speed (10 to 20 m / sec) movement, in order to do work. ⑤ Rodless cylinder: no rod cylinder in general. Magnetic cylinders, cable cylinder two categories. Reciprocating said swing cylinder swing cylinder, the cavity delimited by the blades into two, two chambers to alternately supply the output shaft make the swing motion, the swing angle is less than 280 °. In addition, there are rotating cylinder, gas-liquid damping cylinder and stepping cylinder and the like.