Generally, you can use tapping to return its elasticity to its normal position. If the deformation is severe, you can ask a car repairman to help, hammer and shape it while preheating, and then temper it. Finally, ask the master who makes stainless steel anti-theft windows to polish away the black oxidation marks. This may be costly. If the hair roots are good No matter how sweet the cigarette is, some chefs will not charge for it.