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 Zippers are classified into three major categories based on their materials: metal zippers, nylon zippers, and resin zippers. Metal zippers have teeth made from copper or aluminum wires that are formed through a tooth-making machine. Nylon zippers have teeth composed of nylon filaments that are heated and pressed around a center wire. Resin zippers have teeth made from polyethylene terephthalate plastic granules that are dyed and formed through an injection molding machine.

Resin Zipper
Resin zippers are a type of zipper, with teeth made from polyethylene plastic mixed with dye and injected into shape using an injection molding machine.
Overview
Zippers are classified into three major categories based on their materials: metal zippers, nylon zippers, and resin zippers. Metal zippers have teeth made from copper or aluminum wires that are formed through a tooth-making machine. Nylon zippers have teeth composed of nylon filaments that are heated and pressed around a center wire. Resin zippers have teeth made from polyethylene terephthalate plastic granules that are dyed and formed through an injection molding machine.

"备"在中文里通常指的是准备或预备的意思。如果是指具体的物品或动作，请提供具体的上下文，以便我为您提供更准确的翻译。Note: The shop and physical store operate in sync. Regular colors are all in stock, and the length can be cut according to requirements. For specific details, you can consult via Alipay.
Ordering Instructions:
1. Regular colors can be ordered in small quantities of 1000 pieces. Special colors can be ordered through our Alipay account. We will check if we have stock in the factory and then place the order. If the special color is not in stock, the minimum order quantity is 1800 meters. If the order is less than 1800 meters, a dyeing fee of 150 yuan is required. (The minimum order quantity is determined by dividing 1800 meters by the length of the zipper you want to order).
2. Product size can be customized according to customer's requirements.
3. The pull head of the product is provided based on customer's requirements.
4. After making sure through WeChat or phone, write a note when placing the order.
5. Quantity discounts are available, and the prices in sales information are for reference only. We can offer you a more suitable price based on the quantity of your order!!!!!!!!!!

Additional tax points will be added to the invoice, please consult the customer service for more details!