Different zippers suit different conditions, hence when buying zippers the following matters should be pointed out to the manufacturer:

1. Where will the zippers be used (such as luggage, bags, footwear, jackets, raincoats, tents, jeans, leather products, etc.) or other special requirements.
2. Requirements for the content of zippers: such as whether they are free of AZO or nickel, or should pass needle detector.