Important tips when purchasing a zipper Because the zipper has different adaptability in different environments, it should be specially proposed to the manufacturer when purchasing the zipper:

First, the zipper is applied to which kind of products (such as luggage, shoes, ski clothes, raincoats, tents, jeans that need to be washed, or more acidic leather products) or other special requirements.

Second, the requirements for zipper-restricted chemical substances, such as whether the cloth needs to contain no azo (AZO), whether the nickel release is qualified, or can pass the needle detector.

Third, 3#, 4#, 5# These are the number of the zipper, which is measured by the width of the zipper after closing. Simply put: the bigger the number, the thicker the zipper. Usually the zippers on our jackets are all 5#, like 8# and 10#, which are special zippers, very rough, special order, usually less used. 4YG refers to the zipper on the trousers, which refers to the zipper of the 4# YG head. The zipper head is locked, especially on jeans and slacks. It is relatively strong and is generally metal. Most branded clothes will be custom-made zipper cards on the zippers of their clothes, usually in different shapes, and the brand LOGO is engraved on it, which is a very detailed thing. If done well, it will become a sign.