what is best polyester monofilament for zipper

It is a raw materials zipper monofilament polyester chip with two components: new materials and materials. General mucous biopsy, medium viscosity, high slicing, translucent colour are the categories for new material. Back to the substance, it's a bit hazy, and the transparent hue is a dark yellow, according to the expert.
The quality of the zipper monofilament is directly affected by the price of raw materials, and a good zipper monofilament polyester chip makes the colour contrast closer to the colour of the ribbon. After production, the zipper monofilament must be tested in four areas: strength, elongation, dry heat shrinkage (180 °C, 30 min), and boiling water shrinkage (30 min)