again, I am not referring specifically to Eufy products, but a general discussion on the background of a lot of IOT manufacturers are not that transparent to us. See a related post here.
some more news about Eufy can be found here. Also there is a similar discussion here. In Australia, there was an incident of security breach, details here
A wikipedia page of Anker can be found here. Personally, I have no issue using Anker charger, etc. However, I am extremely cautious on choosing IOT and home network , automation devices, do not want to have a trojan horse within my own home network