The building materials bought in the store are not returned by the owner. What shall we do if we change them?

Well, even the reputation of big brands is not necessarily good, and the price is still expensive. It is best to choose a small brand. The main difference in size lies in the number of advertisements. Small and second-tier brands just don't have big advertising investment, so the cost is low, but the reputation is also good. There are many products using Qingzhou Zhongtian Pipe Industry now, and the evaluation is quite high. Understandable, can be considered.