تهتز شاشة المطاط الشاشة لوسكات
وحدات شاشة تهتز بو البولي يوريثين تهتز للتعدين 1 الوصف Polyurethane is a new type of polymer composite material and belongs to high tech products its nature between plastic and rubber but its performance is much better than the two is an ideal material to replace them