Hi, I've noticed that there are some ítems or techs that require spanish translation, if you give me a list of all those I can provide you with the translations. I just saw one:

stack inserter capacity bonus-> aumento de capacidad de insertadores de stack

non-English locales are not handled by me. They're handled by a 3rd party mod, updated by the community as a whole, but maintained by... this dude.
https://forums.factorio.com/viewtopic.php?f=51&t=17367

I don't have a list of what has and hasn't been translated unfortunately, but you can browse the github files and update there as required.

oh, ok, thanks