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Enkosi ngeenzame zabasebenzi be-R & D. I-resin engaphezulu iye yasungulwa, kubandakanywa ukumelana nokushisa okuphezulu (ii-200 degrees emva kokunyanga kwe-2nd), i-PP ifana ne-resin ethambileyo, i-resin ecacileyo, i-resin emnyama, i-resin ekhatywayo, kunye ne-resin ekhethekileyo yezihlangu.

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