If you want to get acquainted with " natural bitumen ", read this article from Nikan West website the gilsonite producer in Iran.
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About Us Nikan West Gilsonite
About Us Nikan West Gilsonite
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What is Gilsonit? - Natural Bitumen - ZUMRUT KIMYA co.
Ashkan Jamsaz - Chairman of the Board - Nikan West Gilsonite co.
Nikan West Gilsonite Company - Iran, Professional Profile
What is Natural Bitumen Nikan west the gilsonite producer
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