1. Damage resistanceFor field travel, canvas tents, especially in the field for daily activities, the natural environment in the field is appropriately messy and covered, sometimes even called "life" and the environment is bad. In this environment, opening self-help apprentice trav

Advertising umbrella is a commonly used advertising product. In the enterprise's publicity activities, it can not only provide the staff with the effect of shading, but also the advertising information on the umbrella surface can be exposed to the pedestrians, which can play the intention of