Why YKK zipper is top quality zipper all over the world?

Their Metal zipper materials are top quality, corrosion resistance and durability are better, and the cost performance is currently very high.

But the average consumer does not look at your metal Raw materials, etc., their first feeling is the smoothness of the garment zipper, and whether the zipper slider's buckle has a crisp feeling (I usually care about these two points) .Because these two points are the most common when used by ordinary people. 

Yes, then YKK did it at two points, and it did a good job. Most of Levi's products use YKK zipper, and other foreign brands are also available. When most people agree with the hardware accessories used by Levi's, the YKK brand has been spread. Therefore, it has caused a zipper brand that most people know in China. For a merchant, even if you have a better brand, you can choose it on your product. If the consumer does not know it, then there is no extra point. YKK zipper is most famous all over the world.

Some niche brands also use YKK's more upscale series, which is actually pretty good and cost-effective, but some brands may save 1 dollar on a single item and choose a worse series or fake.