I believe the answer by Marcus Müller correctly associates the name "Po Fung" with Baofeng radios.
I found that baofengtech.com and baofengradio.com both have news from 2014 about their brand changing from Baofeng to Pofung. In both cases, the change was short lived. It sounds to me like they're two different importers using the same supplier. You can find the posts here and here.
The post from baofengradio.com lists some business partners: www.baofengtech.com, www.radioddity.com, www.baofengradio.us, and www.sainsonic.com. If you buy from any of these sites, and if you're buying a model these sites have in common, it's likely that you're getting radios from the same manufacturer. (At least until things change.)
If any of these sites have links to online marketplaces such as Amazon, those links should lead to the right products, but you still need to verify the seller name! There's a chance the marketplace site will show you an identical looking product from a different seller if the product is out of stock or if the link you clicked is expired or otherwise defective.
Any Baofeng radios from other sources should be considered suspect unless you can verify their origin. It's possible that they came from different manufacturers. It's also possible that they're factory rejects (maybe sold without authorization) or they were made under a different contract with different specs. There are a lot of possibilities and we can only guess about them.
It's interesting to note that baofengradio.com has an updated version of the name change article referenced above that doesn't name any business partners. Their site also has a page about the Baofeng trademark that makes it clear that some companies are using the name with authorization, and others are violating the trademark. It mentions the existence of authorized distributors, but doesn't name them. The fact that these pages don't name any other companies suggests that it may be very difficult to obtain a more current list of authorized distributors.
Now, I'm going to point out another interesting find. Baofengtech.com uses two different brands on its radios: BaoFeng and BTECH. Given the site's domain name, you might think the two brands are related. But, they're not. You'll notice that the BTECH radios aren't listed at baofengradio.com.
I asked John Miklor (of miklor.com) and he gave me some further information about BTECH:
Several years ago, BaofengTech (BTech) started as an authorized distributor of Baofeng products. Since then they have grown to become an ODM. They work with companies taking existing designs and having custom features added to meet their specifications.
Some of the companies they work with are Baofeng, Vero, Nagoya, Anytone, etc. directly. (No clones, fakes or copies). They still retain the original website identity as BaofengTech, as BTech is used by another company.
Long story short, they are a US distributor (not manufacturer) selling analog and DMR products mostly built to their specs.
