In Ningxia, a province located in the northwest of China, the list of the most popular technical companies can be described as follows:

1. **Company A** – A prominent tech firm known for its innovative software solutions.

2. **Tech Company B** – A local leader in the field of automation and robotics.

3. **Company C – Information Technology Services** – A provider of IT consulting services, helping businesses streamline their digital operations.

4. **Tech Firm D – Cloud Computing** – A cloud computing company offering scalable and secure data storage solutions.

5. **Company E – Artificial Intelligence Applications** – An AI-driven tech company that develops intelligent applications for various industries.

These are just a few examples from the list of most popular technical companies in Ningxia. The list is constantly evolving as new companies emerge and others gain traction.