There are scratches on the shell of my laptop. I want to change my shell. Where can I change it? My computer is from Tsinghua Tongfang.

1. It seems that replacing the scraping shell of notebook computer is not within the after-sales service scope of NB, unless you have the original factory relationship. Tongfang is no exception.

2. The surface of 2.Nb is treated by electrophoretic coating, which can't be covered by ordinary coating.

3. The surface scratches of niobium can be treated with metal restorer. This is a composite material composed of polymer, metal powder, ceramic powder, fiber and curing agent, which can repair various surface defects. It should be sold in chemical stores or supermarkets, and is suitable for repairing metal defects such as wear, scratch, corrosion and cracking.