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Unauthorised personnel must not service or adjust the machinery -

This prohibition sign advises viewers that unauthorised personnel must not service or adjust the designated machinery. Material Options Explained Below is a more detailed description of the materials this particular safety sign is available in. Helping you decide which sign option is most suitable for your application. 1. Rigid Plastic: This lightweight, gloss white PVC is resistant to weather, moisture, chemicals, and general wear and t..