You can use full spray molding or sheet metal painting.
If you don't want to spend so much money, the easiest way is to buy a car sticker and stick the dent on it. This method is more economical. The dent is relatively small and can be repaired by itself. The most important thing is the sucker bridge repair equipment, which sucks out the dent through the sucker. This method is also economical and practical.
Whether the cross beam under the door needs maintenance depends on the owner's demand; First of all, it must be clear that the collapse of the lower cross beam of the door does not affect the use of automobile functions; In addition, even if the beam is repaired, it can't be as perfect as before.
If you want to repair it, you must first find out whether the material of the beam is plastic, metal or aluminum alloy. If it is made of plastic, it is relatively easy to handle. Just pour some hot water into the depression and make it swell as much as possible. Plastic products have a certain degree of shrinkage, under normal circumstances, pouring hot water will swell up; If not, you can also use some professional adsorption tools to pull it out.
If it is made of metal, it will be slightly more complicated to repair than plastic, because the metal shell is usually coated with a layer of particles. A slightly concave one can be pulled out by pulling mesons. If they can't pull it out, they need to go to the 4S workshop for sheet metal repair. In severe cases, they need to be cut and welded with new corner materials.
If it is made of aluminum alloy, it can't be repaired under normal circumstances and needs to be replaced. The cost of replacement is relatively high.