I would not trust ANY Mexican-made product, especially for this purpose. Nothing wrong with U.S. manufactured products, thank you.
Most of their cement is made here and aggregate sourced local too. Concrete is concrete, it gets made to a job specific recipe and it’s tested on the jobsite during placement. If it doesn’t meet spec it’s usually because of water content, initial temperature or excess time from batching wet and getting it to the job.
The wall will probably have a few mobile batch plants when they get far from urban areas with them, and they will probably do a lot of summer pouring at night (cheaper than adding ice for that kind of volume I’d bet).
Me either. You would have to spend too much time testing it.