CRFH (Cold Rolled Full Hard) coils, on the other hand, are cold-rolled steel coils that do not undergo the annealing process. After cold rolling, they are typically subjected to a final cold reduction process to achieve the desired thickness and mechanical properties. CRFH coils are cold-rolled to their maximum hardness and strength, resulting in a harder and stiffer material compared to CRCA coils. They have a more rigid structure and exhibit higher yield strength and resistance to deformation.