Imishini yokugcwalisa idlala indima ebaluleke kakhulu ezimbonini ezihlukahlukene zokukhiqiza ezifana ne-petroleum, ukudla, amafutha, imithi, amakhemikhali, njll. Ngenxa yobuningi bezinketho ezitholakalayo emakethe kungumsebenzi onzima kakhulu ukuthenga umshini wokugcwalisa ofanele.Ake sabelane nawe umsebenzi womshini...
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