massasarjoihin

Could you clarify what "massasarjoihin" refers to? Is it a Finnish term meaning something like "to mass-series" in manufacturing, a title or name of a work, a concept in a specific field, or something else? Also, what scope would you like for the article (definition, history, usage, notable examples)? Once you specify, I can draft a concise, neutral wiki-style article under 300 words.