الرأسي الرمال ضغط حساب تصميم فلتر تحقيق ما عليك سوى ملء النموذج أدناه ، والنقر فوق "إرسال" ، وستحصل على قائمة الأسعار وسيتصل بك أحد ممثلي CNCrusher خلال يوم عمل واحد.
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طحن القرص كله saler الفلبين Difference between Risk and Challenge | Risk vs Challenge. Risk and challenge are two completely different things. The main difference between a risk and a challenge is that a risk is something that has the capability to hurt, harm or injure, whereas a challenge is something that motivates, interests, or engages oneself.