To conclude first, you have only two options:
1. Samsung's official 200-400 series with fan. Not the one over 100.
2. Our company's, ours has no fan, but it hardly heats the phone.
reason
1. Fast, the speed of the two is the same, taking s9 as an example, the charging time from 0 is 2 hours and 32 minutes in the same case, 45-60 minutes faster than other.
2. High quality and safety:
2.1 Samsung's fan is still OK, especially the 2015 and 2018 versions are used in business notebooks, generally at the wholesale price of 3.5-4 US dollars (you can use the wholesale price of some domestic brands of Ali fans), very quiet and durable. Even this price fan, electronic materials can be imagined. The price of electronic products is very balanced, it is impossible to match an 855 cpu with a 1GB memory.
2.2 We use a unique (invention patent plus 6 years of continuous research and development experience) technology, no fan, to achieve continuous low temperature fast charging. Our suppliers (including the case) are also mostly first-tier mobile phone suppliers. However, it is not the original Samsung factory, there is no complete Samsung agreement, and the details of charging are not as good as the original.
3. Wireless charger is the first power supply, and then the daily durable goods, and finally the material basis of life upgrade, I borrow a few days ago Zhihu on the screenshot.