I agree with Dan.....
Well, it is a chinese version of an old Electrolux. They are trying to fool people into thinking they are American made, and associated with the Electrolux company. They are not. If you use their bags in a newer Aerus machine it will void your warranty. However, they would need to find out of course. The problem with the Perfect brand bags is quality control. They might be great, but might not. They might be true hepa material might not. Since they are a Chinese company, they are not worried about their reputation. Having said this, everyone has their own needs, and if these bags fit yours, have at it; just do so with eyes open as to what you are buying.
PS.
I know a couple people who have the Perfect Canister vacuum. One has had great service so far and recommends it highly for its' suction. The other person had a broken machine within the first month, and has yet to make contact with anyone to help her with a repair - she hates it. So......