Point out the shortcomings of current card bookmarks and make at least four improvements.

1. This angle is easy to break. Improvement: reinforce with paper.

2. The horns will prick people. Improvement: wrap the four corners with cloth.

3. Afraid of water. Improvement: the outer bread is covered with a layer of adhesive tape.

4. Waste of resources. Improvement: Use less or no paper card bookmarks.

1, paper bookmarks are not environmentally friendly. Can be used as an original ecological bookmark, such as processed from plant stems and leaves.

2, plastic bookmarks are too thin and easy to slide down, and it is not easy to use. We can transform it into a solid three-dimensional bookmark.

3. Card bookmarks are not durable. A protective film should be added to the card, which can increase the thickness and have wear resistance.

4. Many bookmarks are not wearing braces, which is very inconvenient to use. It should be a more conspicuous and durable logo belt.