Phone charger cable suppliers remind you: look at the agreement. As a 20W PD charger, it generally supports PD fast charging, and the rest depends on product positioning. It is generally believed that the more compatible protocols the better, but it is better for consumers to use them.
Second, look at the power. The maximum power of 20W chargers is generally 20W, but there are also some manufacturers who have more "materials" and the power limit is not strict, so they can be "supernatural", generally not recommended. There are also a small number of informal manufacturers who sell inferior products as good ones, selling the previous 18W as 20W, which is difficult for ordinary consumers to detect.

Three look at the volume. The size of the charger should also follow the rules of the industry. With the support of gallium nitride, high-power chargers are getting smaller and smaller. But also pay attention, if it is too large, it means that the architecture design is not optimal, and if it is too small, you should look at it more to prevent "blind design" (only for three-no products). The current 20W chargers are smaller and generally similar to Apple’s traditional 5W chargers; the larger ones are based on Apple’s 20W charger.
Four look at the price. You get what you pay for, and if the price of a good product is too low, you should be suspicious (promotion is another matter), and if the price is too high, you should also check whether it is an IQ tax.
phone charger cable suppliers will introduce to you: five look at the brand. Generally speaking, big-name products have higher sales volume, higher investment, more cautious product design, and many problems exposed in advance under mass production are easy to solve. Most of the good brands are managed with care, and they are not willing to use "junk products" to smash their signs. In addition, the larger after-sales system will be improved a lot.