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السلام عليكم بالنسبه للموضوع دا لازم قبل خلاطة الخرسانه وكمان الاسفلت اختيار محجر للكساره الى هتورد للخلاطه لازم جيلوجى ومعمل يحلل نوع الحجر فى المحج وبعد كده بياخد عينات ... See More
i belive they add substantial value. being an outsider expert,analyzing the company's performance and problems is much easier when done by an outsider. i have been d ... See More