... a dehydrating device, an air-drying device, a zipper sealing device, an automatic winding device, etc.4. ... an improved type of JL45A, mainly for high-end user.On the basis of JL45A, JL45 B ... increases a cooling water device to form the zipper at constant temperature, a dehydrating device, an ... air-drying device, and a standalone zipper sealing device.JL45B adopts the cast aluminum heating ...