Common identification methods of zipper quality

Tape: The tape is dyed evenly without stains, or scratches and is soft to the touch. The tape should be wavy in the vertical direction or in the horizontal direction.

Scoops: The surface of the scoops should be smooth, and soft to the touch when pulled.

Slider: The self-locking slider pulls easily without slipping off.

One side zipper chain: The chain is tightly fastened to the cloth tape, which is not easy to break or fall off.

Top stop and bottom stop:

a. The top end should be fastened to the first scoop (metal, nylon), but the distance should not exceed 1mm and it should be strong and perfect.

b. The bottom stop is tightly fastened to the scoop or clamped on it, and it is strong and perfect.