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Congratulations to Shanghai Yingzhun for obtaining the patent number of 20222268960.9.

The patent can effectively reduce the bobbin yarn of the yarn binding machine to and fro release on the bobbin,



Because the pitch of the yarn is large, the diameter of the bobbin is high or low,



There is a scratch between the released yarn and the yarn in the bobbin, which causes the change of yarn friction and tension fluctuation.