Why is the aluminum roll upset?Mainly in the aluminum slitting process, for various reasons, does not meet the standards and specifications of products, can be used to roll the machine from the new trimming and slitting, winding up to meet customer needs of product specificationsMainly in the aluminum slitting process, for various reasons, does not meet the standards and specifications of products, can be used to roll the machine from the new trimming and slitting, winding up to meet customer needs of product specificationsMainly in the aluminum slitting process, for various reasons, does not meet the standards and specifications of products, can be used to roll the machine from the new trimming and slitting, winding up to meet customer needs of product specificationsOther related question