Brand: Choose a reliable enterprise, because there are many companies in this industry, and many small workshops casually buy a second-hand motherboard and assemble it to pretend to be an industrial computer, which is particularly cheap. Be sure to pay more attention when choosing, and try to choose some bigger brands when choosing.
Service: The service life of industrial computer is generally 5~8 years, so it is difficult to ensure that there is no problem in the middle. The key is how to solve the problem. So when choosing, on the one hand, choose a longer warranty period, so that the after-sales cost is lower, and because the warranty period is longer than others promised, the quality should be more reliable. There is also a look at their outlets, paying special attention to whether these outlets are agents or direct sales. If you are an agent, you will rarely dispute. There is also the service concept of this company (this is not easy to judge)
Price: don't choose too low, the quality is unreliable, and it's not too expensive and uneconomical. Choose a reasonable price (refer to your configuration)
The rest can meet your parameter requirements.
Finally, I recommend several people who think they are reliable, such as Yan Hua, Apuqi and Yang Yan.
I hope it will be useful to the landlord and adopted.