From manufacturing to final delivery to the user, every link is strictly controlled to ensure the excellent performance and reliability of the product. First of all, in the raw material procurement stage, it is made of high-strength polyethylene material; secondly, the use of advanced production processes makes the finished product have good toughness and tear resistance-which means that even in the face of heavier items can easily carry the risk of not breaking and scattering.

Not only that, but the variety of size options offered by this series of courier bags is one of the reasons for its wide acclaim. From small bags (e. g. 17x 30) suitable for document bill delivery, to large-capacity models (e. g. 50x 70) that can hold large packages of goods, almost all scenarios required for daily operations are covered.
This flexibility provides great convenience for enterprises, allowing them to accurately match the corresponding packaging solution according to the specific cargo volume, thereby minimizing resource waste and ensuring safe and reliable transportation.

In addition to focusing on functionality, environmental issues have also become an issue that is becoming more and more important in today's society. For this reason, our black-and-white express bags pay special attention to the work of sustainable development and strive to find the right balance between the two: on the one hand, we insist on the use of degradable materials to reduce the burden on the environment; On the other hand, we reduce costs through large-scale production and optimization of supply chain management to facilitate more enterprises to benefit from this innovation.

In order to enable every potential customer to quickly find the most suitable product for them, here is a simple and easy-to-understand operation guide for everyone. You can estimate the average weight according to the type of goods you mainly send, and select the corresponding specification parameters according to the recommendation table to complete the ordering process.

• Lightweight: Suitable for document transmission-recommend optional 17x 30cm.
• medium grade: taking into account the carrying function of clothing accessories-consider trying 30x 40cm.
• heavy grade: for electronic products and electrical products with higher protection requirements, it is recommended to see 50x 70cm.

finally, I have to mention that the feedback from countless satisfied customers has verified that this black and white express bag is really worth the money. Both large e-commerce platforms and small independent store operators spoke highly of them as "strong and durable, not easy to break" and praised: "reasonable price and comprehensive service." It is this excellent market performance that has established today's solid position.