Hello Mr yabo.
Welcome to our Mattress Forum! 
“100% Natural Talatech Latex Rubber Foam” has the OEKO-TEX certificate which means that the product has been tested for and found to be clear of harmful substances. It does not, however, guarantee that a product is made of all-natural materials. It’s not the first time we’ve encountered the blended vs. natural Talatech debacle before! You can read that here but what it ultimately comes down to is: Talatech is a registered trademark of Latex Foam International Holdings, Inc., and used by Talalay Global for their latex products. As the vast majority of the Talalay they produce is blended, it is most commonly associated with their blended Talalay latex. However, it is also associated with their Talalay using phase change materials, and their natural Talalay. You can find it denoted as Talatech Classic (the blended), Talatech Celsion (with the phase change material), and Talatech Natural (their NR Talalay).
Correct! They do indeed have 100% Natural version called Talatech® Natural commonly referred to on our mattress forum as NR Talalay.
Phoenix