... performance zipper extruder Usage:1. JL45 B is an improved type of JL45A, Which is designed and manufactured by ourselves.2 ... to the machine.Characteristic:JL45B is an improved type of JL45A, mainly for high-end user.On the basis of JL45A, JL45 ... ring, and the filter net of the mould adopts the integral type one, which is easy to unpick and wash. The winding ...