The riyakitala chimagwiritsidwa ntchito mafuta, mankhwala, mphira, mankhwala, utoto, mankhwala, chakudya ndi ntchito kumaliza kuthamanga chotengera cha vulcanization, nitrification, hydrogenation, alkylation, polymerization, condensation, etc. Malinga ndi njira zosiyanasiyana kupanga, zikhalidwe ntchito , etc, kapangidwe kamangidwe ndi magawo a riyakitala ndi osiyana, ndiko kuti, kapangidwe ka riyakitala ndi osiyana, ndipo ndi wa sanali muyezo chidebe zida.