1. The rise of e-commerce: With the popularity of the Internet and the rapid development of the e-commerce industry, people are increasingly inclined to shop online. This has led to a significant increase in the number of commodity packages, which in turn has driven the demand for express bags.

2. Increase in global trade: The rise of global trade and cross-border e-commerce has caused a significant increase in cross-border parcel mailing volume. As an important tool for packaging and transporting goods, express bags play an important role in global trade, so their demand has increased accordingly.

3. People's pursuit of convenience and efficiency: Modern society emphasizes convenience and efficiency, and people are willing to use express delivery services to meet their needs in life and work. This has led to the popularity of express delivery services and an increase in demand for express delivery bags.

4. Increase in environmental awareness: With the increase in environmental awareness, many countries and regions have begun to restrict or ban the use of disposable plastic bags. Therefore, express bag manufacturers and users have begun to look for more environmentally friendly alternatives, such as degradable express bags or express bags made of recyclable materials.

5. Increase in demand for customization: Many companies and e-commerce platforms have begun to focus on customized packaging in order to enhance their brand image and differentiate themselves from competitors. Therefore, the demand for customized express bags is also increasing, driving the growth of global express bag supply.