A pre-opened plastic bag is a plastic bag with openings pre-opened during the manufacturing process. This kind of plastic bag usually has the following characteristics:
 

Pre-opening: Pre-opened plastic bags have one or more openings already opened during manufacture, which allows users to easily open the bag when needed and facilitate access to items.
Convenient to use: Due to the pre-opening, this plastic bag is easier to open without additional tools or force. This is very convenient for quickly packing or storing items.
Versatile: Pre-opened plastic bags are suitable for a variety of uses. You can use them in your daily life to package food, snacks, stationery, small items, etc. They are also commonly used for commercial purposes such as packaging goods, selling and displaying products, etc.
Material and size: Pre-opened plastic bags are usually made of plastic materials such as polyethylene (PE) or polypropylene (PP). They can be made into various sizes and specifications to suit different packaging needs.