The flange type transparent flexible connection is mainly related to the operating conditions applied, including: firstly, the characteristics of the conveyed material: temperature, wear resistance, corrosiveness, and flammability. For example, silicone cloth soft connections have a high temperature resistance of over 200 degrees, but their wear resistance is far inferior to polyurethane soft connections. When the material is flammable, conductive materials are preferred; When the material is corrosive, polytetrafluoroethylene (PTFE) soft connections can be considered. Powder transparent soft connection, Hunan lithium battery transparent quick installation soft connection, transparent quick card type soft connection. The second condition is the location of application: pressure size, whether it is negative pressure, and whether it is used in vibrating or swinging equipment