First, applicability, the higher the configuration, the better.
Second, economy, not the more expensive the better,
Third, the style and use in different places have some specific requirements for the machine. Professional configuration of appropriate styles and functions is of great benefit to improving profitability and later use costs.
Fourth, choose the right supplier and the right manufacturer. Some domestic mobile phones are inexpensive and have many functions. How about quality, after-sales and stability? It's not just a matter of configuration.
In short, the doll machine needs to consult the right person to find the correct answer.