Which camera shop in Shenzhen Huaqiang North Cyber Plaza has a good reputation?

I only know a four-story camera shop in Jin Dian, which is not bad. I saw it when I was shopping, so I went in to have a look and bought a second-hand camera at his house. Now I use it very well. Generally, there is no warranty for second-hand things, but the store promises a warranty, and I feel good!