There are many umbrellas on the market now, and the prices vary greatly. The key to judgment is to look at the cloth and paint used for umbrellas. If it is very cheap, the Oxford cloth used to save costs is not dense enough, which basically has no effect. To use a good cloth, you must have a good coating. The waterproof coating on the front is basically the same for everyone.
The key is the coating on the inner surface. Generally, PU coating is cheap, and PA coating is good. The price difference between the two coatings is not small, but they are all silver visible to the naked eye, but PA is not so slippery to the touch, which has the effect of matte paint. The best one is double coating, that is, first coating UV and then coating PA. This kind of sunscreen has the best effect.
Finally, the bracket installed on the electric car. Good brackets are all solid steel, which can be used as wrenches when they are dismantled by hooligans. The worst thing is the hollow steel pipe on the car, which is easy to rust and has potential safety hazards. If you are interested, you can check the accident of electric car umbrella in Zhejiang. It is recommended to buy products from brands and national patent manufacturers. For details, you can search on Taobao: 20 12 new patent electric umbrella.