As for the colored flags, the materials for making them are very particular. More than 98% of them are all kinds of textiles, which are printed by screen printing process. However, there are not many enterprises producing flags in the textile system. There are hundreds of designated national flag manufacturers nationwide, which is one of the few in the textile system. The research on improving the technological level of flag production is difficult. The difficulty lies in the particularity of flag customization, which can be summarized in the following aspects:

1. The flag has both political meaning and many specific functions, so it is important for internal and external quality.

2. Flags from bleaching and refining, fabric, printing and dyeing, sewing and equipped with hanging devices can be regarded as a system engineering of textiles. It is difficult for a production unit to complete them at one time, and it can only be patched up from east to west.

3. The size difference of customized flags is more than 100 times.

4. Most of the enterprises producing flags are small enterprises in all walks of life, and the technical equipment is not perfect, which restricts the improvement of quality level and the expansion of production quantity, and has no time for research.