The document discusses natural rubber, including its importance as a raw material, challenges in its supply, and how it was identified as a critical raw material by the European Commission. Natural rubber comes from rubber trees and makes up approximately 30-40% of latex. It is harvested by making incisions in rubber tree bark to extract the latex. Approximately 70% of rubber used is synthetic which is made from petroleum feedstocks, while natural rubber comes from rubber trees primarily in Southeast Asia where the climate supports rubber tree cultivation.