Napan Persadanapanpersada.hashnode.dev·Jun 18, 2024In-Depth Look at Vulcanization, Hardening Process for Natural RubberNatural rubber comes from sap extracted from the hevea tree, more commonly known as the rubber tree. The practice of extracting sap from these trees is known to have been done by the ancient Aztecs and Mayans. It is done by removing a sliver of bark ...vulcanization
