Is the signal in China Southern Umbrella poor?

The signal of China Southern Umbrella is not bad. According to relevant public information inquiries, the Nan Umbrella also adopts advanced intelligent designs such as automatic opening, automatic retraction and wind self-adaptation, allowing it to maintain good stability and reliability under severe weather conditions; in addition, the Nan Umbrella It has also undergone multiple field tests and strict quality inspections to ensure the stability and consistency of its quality.