I believe the macro bases segmentation in business to business industry is that the supplier segments each buying customer in terms of the company size, location and the frequency of uses.

On the other hand, the micro-segmentation digs deeper into each macro segmentation in terms of the buyers decision making process.

For example, buyers make the decision to purchase based on the comparison with other suppliers pricing and product feature or based on the personal characteristics of purchase decision-makers.

Am I on the right track?

And would you please give some example that the actual company uses the micro segmentation?