Rubber trees near my farm seem to be very old but they are still producing latex. Rubber trees take 7 years to grow into maturity and will produce latex for another 25 years. Not many farmers are willing to grow rubber trees because of the initial slow return. There are also much works to process into rubber sheets before being sold to the traders. But the current price is high, this has lured some farmers to allocate part of their land to grow rubber. About 42% of the consumed world rubber is made from natural rubber. The rest is synthetic rubber.
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