what is the difference between DC aluminum circle and CC aluminum circle?

CC and DC  aluminum circles are used to make cookware like cooking pans, saucepans, pots, pressures, non stick pots and so on. 

Casting rolling (CC) and hot-rolled (DC) are different in performance, the cast-rolled aluminum discs have poor deep drawability compared to hot-rolled aluminum discs and are rarely used for deep drawing.

The high quality aluminum circles are mainly hot-rolled products, after anodized without color difference, has strong extended performance, can be applied to subsequent processes of stretching, deep drawing, spinning, oxidation, etc.

Hot-rolled material: aluminum ingots – melting and casting into flat ingots – milling – homogenization annealing – hot-rolled into sheets and strips.
Cold rolled material: ingots – melted – rolled into strips by casting and rolling mill.