How many types of rubber are there?

During the initial period of rubber manufacturing, the raw material was procured almost entirely from South America. Rubber occurs in the ‘Hevea Brasilienses’ tree as latex, a milky liquid exuded when the tree is wounded or cut. As early as 1834, Hancock from Brazil, suggested the possibility of growing rubber tree under more controlled conditions in the similar tropical climate of the Far East. In 1876, an alternate was made by Sir Henry Wikham. Some 70,000 seeds brought by himself from Brazil were planted at Kew and about 2,000 young…

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