valmistaessaan
Valmistaessaan is a Finnish word that functions as a temporal adverbial clause. It is the elative plural form of the present active participle of the verb "valmistaa," which means "to prepare," "to make," or "to manufacture." Therefore, "valmistaessaan" literally translates to "while they are preparing" or "while they are making."
In Finnish grammar, this form is used to indicate an action that is happening concurrently with another
The elative case ("-sta/-stä") in this context signifies "from within" or "out of," suggesting the action of