Kumashishini amaninzi, ukusetyenziswa kwe-hydrocarbon resins iye yaba yinxalenye ebalulekileyo yemisebenzi yabo. Izinto eziguquguqukayo zinoluhlu olubanzi lwezicelo kubandakanya izicelo, iingubo, iirks kunye nezityholo. Njengomvelisi okhokelayo we-hydrocarbon resins, tangshan sasiil ...
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