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Standardisation or standardization, in the context related to technologies and industries, is the process of establishing a technical standard among competing entities in a market, where this will bring benefits without hurting competition. It can also be viewed as a mechanism for optimising economic use of scarce resources such as forests, which are threatened by paper manufacture. As an example, all of Europe now uses 230 volt 50 Hz AC mains grids and GSM mobile phones, and (at least officially) measures lengths in metres (except UK).