Back-to-back hook and loop is to glue two hook and loop materials (hook side and wool side) together back to back to form a product that can be stuck on both sides. This design makes the hook and loop more flexible to use, and is no longer limited to sticking in one direction.

Advantages of back-to-back hook loops:

1. Double-sided sticking: Can be stuck on both sides, providing a wider range of application scenarios.
2. Quick fixing: Easy to attach and remove, reusable.
3. Customization: Can be cut into different sizes and shapes according to needs.
4. Various materials: There are a variety of materials to choose from, suitable for different occasions.

Common applications for back-to-back hook loops:

1. Wire bundle: Used to bundle wires, cables, etc., to organize wires and avoid clutter.
2. Fixing: Used to fix items, such as fixing tools, fixing posters, etc.
3. Make labels: You can make reusable labels to easily sort items.
4. Make a storage bag: You can make a simple storage bag to store small items.
5. Others: handicraft production, DIY, industrial use, etc.