In contemporary society, with the rapid development in technology and economy. Especially focus on improving the value of residues in agricultural products The organizer has research and found that there is one chemical called "tannin", which is a compound of phenols with status as a weak acid. Also known as the "antioxidant" the party organizer is conducted additional plants 3 species is eucalyptus bark, cassava leaves Guava leaf to bite and tannin for termites, which are insect enemies without relying on chemical plant
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