Hi jege41,
They are listed in post #4 here (with my comments) and sell Latexco products of different types. They do have good value but are not as knowledgeable about the products they are selling as many other merchants. Purelux is a blended Dunlop latex but I don’t know the exact blend ratio (likely somewhere between 50/50 and 70/30 NR/SBR). It comes in softness levels that is roughly comparable to soft Talalay although it doesn’t have quite the same “feel” and is more like Dunlop than Talalay.
Phoenix