Daim ntawv thov:
Cov cuab yeej siv tsuas yog siv rau kev kho txoj siv sia kom ruaj khov thiab cov txheej txheem txias Nws yog qhov yooj yim rau txoj siv kom teeb tsa sai dua, txhim kho cov vulcanization efficiency, zoo thiab cov khoom zoo li.
Cim npe nrov: stabilizing cua txias tshuab, Tuam Tshoj, lwm tus neeg, manufacturers, hoobkas, ua nyob rau hauv Suav teb
