The price of the Phoossno 15m certified UHS cable is far cheaper than the uncertified Ruipro equivalent (about 30% cheaper). I am going to give it a try and will return to Amazon if there are problems within the return window.Yeah, if you can't find direct company info like a support page or any warranty information I'd look elsewhere. Amazon is just a reseller and doesn't check with the seller for accuracy of their product claims other than making them jump thru hoops to offer their products on Amazon.
If you think you need or want a certified hybrid fiber cable, I'd look to Ruipro (whose certified cable should be released by the end of the month), Cable Matters, or Maxonar. Certified copper-based UHS HDMI cables would either be Ruipro or Zeskit.
I am particularly concerned with the heat on the Ruipro source connector. Heat is a killer for electronics. If the Phoossno works and runs cooler than the Ruipro, then I will keep the Phoossno. If not, I will return it.