Chiyambireni m'nyengo yozizira, Petroleum Resin msika wapakhomo wa petroleum resin wakumananso ndi "nyengo yozizira" ina. Malinga ndi amalonda, Petroleum Resin kufooka kwa chaka chino pamsika wa petroleum resin kwakhala kokulirapo kuposa zaka zapitazo. Kuchuluka kwa malonda ndi mawu atsika kwambiri poyerekeza ndi zaka zapitazo. Ngakhale zinthu zasintha pang'ono, kukayikira kwa amalonda a Petroleum Resin kumsika sikunafooke.
Zomwe msika wapadziko lonse lapansi wamafuta utomoni zakhala zikuyenda bwino m'zaka zaposachedwa, Petroleum Resin ndendende chifukwa msika wapanyumba wamafuta amafuta umagwirizana kwambiri ndi zomwe mitengo yamafuta padziko lonse lapansi imayendera. Chifukwa chake, Petroleum Resin kutsika kwa msika nyengo yozizira sichifukwa chazifukwa zapakhomo. Ngakhale amalonda ena adanena kuti msika wapakhomo wa chaka chino wachotsedwa pang'ono pamsika wapadziko lonse, Petroleum Resin ponseponse, Petroleum Resin msika wapakhomo ukuyendabe ndi mitengo yamafuta amafuta padziko lonse lapansi.
Mwachidule, Petroleum Resin "nyengo yozizira" yonse ya msika wa petroleum resin nyengo yozizira ikadali yokhazikika kwakanthawi chifukwa chazovuta zosiyanasiyana zapadziko lonse lapansi komanso zapakhomo, Petroleum Resin ndi zofuna zapakhomo zitha kukhala zofooka. Pali zinthu zambiri zosatsimikizika komanso zosakhazikika pazamalonda zapadziko lonse lapansi, Petroleum Resin kotero pali zinthu zambiri zosatsimikizika pamsika wamtsogolo wa petroleum resin. Kutengera zomwe zikuchitika pamsika wapakhomo, Petroleum Resin "nyengo yozizira" iyi simakhudzidwa ndi zinthu zazikulu zomwe zimakhudzidwa ndi msika. Pazifukwa izi, Petroleum Resin msika uwonetsabe kuphatikizika kofooka.
