There is no best, only better, and the price is not the lowest, only lower. Guangzhou, Pearl River Ming Dow and other first-line brands. High price and stable quality, suitable for local tyrants. The second-line brand Xuandaoming ... has moderate price, reliable quality, suitable for small and medium-sized buyers, much cheaper than Big Brother and Xiangming, and its quality and service are also very powerful. Third-line miscellaneous brand Shijing is widely used, but it is cheap, so it is not recommended to use it once.