Movable Canvas type has the new design of the rocker valve which is durable and reliable for machine. It is equipped with Programmable Logic Controller (PLC) and user interface, makes operation easy and easy to maintain. The mold base can be simply attached and offers the easy horizontal adjustment function. This machine is suitable for welding canvas with high speed and high production efficiency. It is also equipped with the ARC suppressor which has high sensitivity, so it responds very soon and has high stability.