Sources from South Korea report that Samsung has decided to use Ultra Thin Glass (UTG) on the upcoming Galaxy Fold 2 phone (there were some doubts until recently). It has already made an order from Dowoo Insys and Schott, the same companies that crafted the UTG used in the Z Flip. However, Samsung wants to bring manufacturing costs down and has struck a partnership with Corning (the maker of Gorilla Glass). The two companies are working to to accelerate development and to set up a supply chain in the US. Currently the plan is to start using Corning UTG on foldable phones coming out next...
Source: https://www.gsmarena.com/samsung_partners_with_corning_to_develop_utg_glass_for_2021_foldable_phones-news-43639.php