Hi pennies,
If you are considering a DIY approach then post #6 here and the posts it links to would be worth reading.
The name of their supplier isn’t really meaningful or relevant and there are many suppliers or mattress manufacturers that prefer to keep the name of their suppliers proprietary for competitive reasons. Many manufacturers or suppliers will also change their suppliers from time to time based on market conditions without affecting the quality, performance, or durability of their mattresses. The type and blend of latex is much more important than the name of the latex manufacturer that produces it and any 100% natural Dunlop that comes from Sri Lanka will be a good quality material and 100% natural Dunlop latex that comes from different suppliers will be closely comparable so it’s not something that I would be concerned about since it won’t affect the quality, durability, value, or performance of their mattresses or components.
Phoenix