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What do the black and green labels of mature vinegar mean?

Green label, green food black label, patent trademark applied for by the product itself, generally used for marking, adaptability and artistry, for details, see /question/14027206.html?fr=qrlamp; cid=185amp ;pt=360se5Fikamp;index=2There is an essential difference between the two. The green label is explicitly stipulated by the state, while the black label is independently designed by each company