According to the size: 3#, 4#, 5#, 7#, 8#, etc. The size of the zipper changes according to the size of the microphone teeth. Because it is often used in jeans, jackets and backpacks, the size of its zippers are relatively large.

According to the type: closed zipper,

Open zipper (detachable),

Double-closed zipper (X-zip and double slider are opposite each other or O-zipper and double slider are opposite each other), double-open zipper (reverse opening can be separated) Microphone material: Ao Shiqi's existing material type is aluminum Alloy, brass, cupronickel, zinc alloy, etc. The color of metal microphone teeth is often electroplated according to needs, such as aluminum microphone teeth plating yellow, brass microphone teeth plating white, black nickel, green bronze, red bronze, gold and other colors. The composition is the same as other zippers, and the composition of the metal zipper is also composed of cloth belts, microphone teeth, sliders, and limit codes.

Cloth tape: The material is generally fiber tape, cotton webbing or polyester fiber tape. Different materials can be selected according to different purposes.

Microphone: The metal zippers on the market are mostly made of aluminum alloy, brass, cupronickel, zinc alloy and other materials. Since the color of the microphone teeth on the metal zipper is electroplated, if it is not stored properly, the microphone teeth will turn black And it will cause pollution to clothing. For copper alloy microphones, oxidation is prone to occur. Therefore, ensure a certain degree of ventilation during storage. Do not store in a sealed or humid environment. Use moisture-proof paper or dehumidifier when necessary.

Slider: The colors of metal sliders are green bronze, red bronze, white-plated, yellow-plated, black nickel, black and white nickel, and matt silver. Normally, the color of the metal slider is required to match the teeth of the metal zipper. The colors are the same. According to regulations, the commonly used slider parameters are:

3# The mouth height of the metal slider is 2.1-2.2mm, and the mouth width is 4.55-4.65

5# The mouth height of the metal slider is 2.7-2.8mm, and the mouth width is 6.0-6.05

Limit code: divided into top stop (front code) and bottom stop (post code). The main function of the top and bottom stops is to prevent the slider from being separated from the microphone teeth.