These appear to be similar and/or copies of Lehigh Defense Chaos bullets. I've never tried CEB bullets, but I'm a tester for Lehigh. Their Chaos bullets are great.
Killed a 250# black bear 2 years ago with a 250 gr. Chaos in my .375/.284 XP at 144 yds. He dropped. The solid base penetrated both shoulder blades. The 4 petals ended up in the spine, backstrap, intestines, and lungs. All penetrated 6-12". Deer with this bullet drop immediately.
I've used their 115 gr. .30 cal. Chaos in my HS .308. Killed deer out to 400 with them. Damage is equal to, and usually superior to 150 gr. BTs.
I've used Lehigh Penetrators in .44 and .454 on deer and groundhogs. These animals don't provide enough resistance to properly evaluate them. They act like solids, but do kill quickly.
Again, I can't attest to the performance of CEBs, but I give the Lehighs a 5* rating.