The roll gap value at both ends of the sickle-shaped hot rolling mill roll is different; the guide ruler feeds the strip plate incorrectly, and the two sides of the strip plate extend differently; the hot rolling mill roll is not preheated well, and the roll shape is incorrect; the emulsion spray is uneven or the nozzle is blocked; The sheet was misaligned during calender rolling.

For aluminum foil​ companies, the operating rate of leading companies was flat at 84.9%, and orders remained full. However, rising aluminum prices have put financial pressure on the purchase of small and medium-sized enterprises.

Aluminum, the raw material of our daily industry, is called aluminum ingot. According to national standard (GB/T1196-93) , it should be called”aluminum ingot for remelting”, but everybody is used to call "aluminum ingot".