在RED无线指令DIRECTIVE 2014/53/EU中,明确容许标志低于5mm: Article 19 第2点 “On account of the nature of radio equipment, the height of the CE marking affixed to radio equipment may be lower than 5 mm, provided that it remains visible and legible.” 来自于:https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32014L0053