Resin button is short for unsaturated polyester button. Its main characteristics are: the wear resistance of resin button unsaturated resin belongs to the resin of heat fixation, the strength of the material is high, and the scratch resistance of the surface is much stronger than that of the thermop......
Read MoreThe zipper mechines works in a similar way to syringes used for injections. It is with the help of the thrust of the screw (or plunger), the plasticized molten state (that is, viscous state) of plastic injection into the closed cavity of a good mold, the zipper mechanical internal solidification mol......
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