These kinds of rubber bellows are used as the metal expansion joint to adjust the movements such as axial, lateral, or angular. The structure of the rubber bellows has two connectors and the convolution region. The connectors used in this bellow are designed in according to include the holes, mechanical locks, clamping surfaces, and many other advanced features. This structure is made with breather holes and the assembly interfaces. These provide a sufficient amount of air ventilation. The various types of bellows manufactured by the Qingdao Guanshan Industry Co., Ltd are molded rubber bellows, molded convoluted rubber bellow, Neoprene rubber bellows, and flexible corrugated rubber bellows. These can be used in various machines for the purpose of noise reduction and connecting parts of the machines. The products manufactured by this company have a high standard, long durability, and good quality.