valettuihin

Could you clarify what you mean by "valettuihin"? The term is ambiguous in Finnish and could refer to different concepts. For example, it could be the illative plural form of valettu, meaning metal castings or cast pieces, in which case an article would cover definition, production methods (such as sand casting or investment casting), materials (steel, aluminum, bronze), quality and testing, and typical applications. Alternatively, it could be a misspelling or refer to a specific place, project, or concept.

If you can provide context or specify the intended meaning (for example, a technical sense related to metal casting, or a different topic), I can generate a concise, neutral, wiki-style article of up to 300 words in plain text.