Double synchronous belt note: diyi notice when the choose and buy the product surface is clean, the belt there should be no distortion, toothed must be full; The second products during transportation, installation and so on, it is forbidden to twists and turns, otherwise it will damage the skeleton material, affect the belt use intensity; The third product in the process of installation and use, shall not be artificially cut belt, not with chemicals, try to avoid contact with oil and water for a long time, so as not to affect the service life of the product; Fourth replacement products, the need to reduce the tension of belt zui is low, can take out, it is strictly prohibited in the case of high tension, adopt the special hard tool to pry the ye.