Yes, multiple companies in China make the same flashlight(s). And these companies market those flashlights under different names and/or vendor accounts. The flashlight in your link above is one of them. There are a gazillion of them on Ebay. Not to rain on anyone's parade, if you spent $20 on it then you were taken. That's about four times what you'd pay on Ebay. Yea, you can get a flashlight like that for around $5 give or take. Here's a bit more salt for the wound, it states 2500 lumens. Those are Chinese lumens which are as real as Peter Pan, no-touch knock outs, unicorns and magic beans. They make up a number that they think will impress people. There is
NO WAY that light produces 2500 lumens on six 1.5V AAA batteries. If it produces even 500 lumens you'd be lucky. It also doesn't seem to have a very efficient driver but that's another story.
As I mentioned earlier, go to Ebay and type in Sipik and/or SK68 and you'll see more lights than you can shake a stick at. Type in CREE LED and you'll see the same thing.
I someone wants an inexpensive light that still has quality then you'd be MUCH better served going with a Convoy S2+ and invest in a couple of quality 18650 cells and a good smart charger.
Buy Products Online from China Wholesalers at Aliexpress.com
That link is to Simon's store on Ali and he is one of the few in China with a sterling reputation. These lights have the excellent 7135 chip drivers. You can custom order 3,4,6 or 8 chips. If you're unfamiliar with that kind of driver (circuit board that runs the flashlight) it has chips which run the amps from the battery to the LED. If you want max run time (yet still have a VERY bright light) choose 3 or 4 chips. If you want maximum lumen output then go with 6 or 8 chips. Get a conversion tube so that you can shorten it to an 18350 sized light and get a pocket clip. This is a flashlight that will actually work when you need it, has memory, has L, M and H with strobe and SOS that can be hidden.
Check out this thread for more information and videos on torture testing:
Convoy S2+
You can get a Convoy S2+ for between $15 and $20 depending on the features you want. A few more $ if you want the pocket clip and 18350 tube. If you want it quicker then go with Richard at M.E. and you'll get the same light in just a few days.
Flashlights
Richard gets them from Simon and both companies have thumbs up ratings on BLF.
If you want the same type of light that's even brighter then go with the BLF A6 or Astrolux S1 (same light/different name).
Astrolux S1
You'll probably pay between $20-$30 for these and they already have the clip and tube.
Other options are Nitecore products like the SRT3, 5 or 7 or EA11 or EC11 depending on how big and what types of batteries. Nitecore will run you more $ however. But they are great lights.
And again, spend the extra $ and get GOOD lithium ion batteries from a trusted source like Richard above. DON'T GET THE CRAP XXXFIRE BATTERIES ON EBAY. Yeah, their cheap for a reason. Go with Samsung, Panasonic, Efest, Keeppower, King Kong, Nitecore etc. And get a good charger like a Nitecore:
Nitecore I2 & I4
No, don't have stock in any of the above. But I know a thing or three about flashlights. Hell, I can build/modify them when the mood strikes me.