Can the label work properly in a watery environment? Does metal destroy its function? At what temperature does it work? Products with high water content, metal objects, high or low temperatures can be a challenge for label work. But well-designed systems can overcome these shortcomings, so the types of labels vary widely depending on the application and the object. The purpose of the RF tag is to use a uniform standard of electronic product code to enable the product to be identified in different areas.