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Kampani yochezera
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Kubowola chitoliro thickening
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Zotsatira za kubowola chitoliro thickening
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Ogwira ntchito akukulitsa chitoliro chobowola
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Momwe mungakulitsire chitoliro chobowola
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miyala ya diamondi ndi chiyani
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Mikangano kuwotcherera
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Paint production line1
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Paint production line2
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Workers are manufacturing diamond bits
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Manufacturing process of diamond bits
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How to sinter the diamond is the drill bit
