For temu packaging bags, they generally need to be sealed. Sealing can protect and seal to ensure the quality and safety of the product. The specific sealing method can be selected according to the material and size of the packaging bag. Common sealing methods are as follows:

1. Heat sealing: Use a heat sealer or heat sealer to seal the mouth of the packaging bag by heating to form a sealing effect. This method is suitable for materials with good heat sealing plasticity, such as plastic bags.

2. Self-adhesive sealing: The mouth of the packaging bag is pre-coated with glue or tape, and the mouth can be directly glued together. This method is simple and convenient, and is suitable for disposable packaging bags.

3. Zipper sealing: The mouth of the packaging bag is designed with a zipper, and the mouth is closed by pulling the zipper. This method is suitable for packaging bags that need to be opened and closed multiple times, such as food bags, storage bags, etc.

4. Manual sealing: Use clips, ropes, tapes and other manual tools to fix and seal the mouth of the packaging bag. This method is suitable for temporary sealing needs.

It should be noted that different products and packaging requirements may have different sealing methods. You can choose the appropriate sealing method according to the specific situation.