Chitukuko cha C9 petroleum resin kupanga kunyumba ndi kunja: chitukuko cha mafakitale a petrochemical chimapereka zipangizo zolemera komanso zotsika mtengo zopangira mafuta a petroleum resin, Petroleum Resin kotero kuti kupanga mafuta a petroleum resin m'mayiko otukuka a petrochemical kukukula mofulumira. Kapangidwe ka utomoni wapanyumba wa c9: C9 ku China Kupanga mafuta a petroleum resin kunayamba mochedwa, Petroleum Resin koma kupita patsogolo kuli mwachangu, Petroleum Resin yomwe yatsegula njira yatsopano yopangira utomoni wapanyumba.
Pakadali pano, pali mabizinesi pafupifupi 50 opanga utomoni ku China, Petroleum Resin omwe amatha kupanga matani opitilira 2 miliyoni pachaka. Imatha kupanga utomoni wa C5, C9 resin, C5/C9 copolymer resin, Petroleum Resin ndi hydrogenated resin. Zida zopangira kwambiri ndi C9 petroleum resin. 70% ya mphamvu zopanga. C5 petroleum resin ndi 30%. Kukula kwa zida zambiri ndizocheperako, mitundu yake ndi imodzi, Petroleum Resin ndipo mtundu wazinthu sizokwera, makamaka zizindikiro zazikulu monga mtundu wazinthu ndi malo ofewetsa ndizosakhazikika,Petroleum Resin ndipo mawonekedwe amagwiritsidwe ntchito ndi ochepa kwambiri. .
