Today, I will explain this classic first, ZP anti-counterfeiting label to the treasure. This ZP has three sets of anti-counterfeiting labels. The first set is on the edge of the last button of the adjusting ring. The material, year and place of origin of the product are engraved on this edge, and there is also a number printed with a steel seal. This steel seal is much more difficult than the little red man charity, because its stress area is too small, only a little smaller than the edge. To manually print a steel seal smaller than the edge, this is absolutely manual, especially not easy. The second group of anti-counterfeiting marks is on the inner edge of the pendant, numbering a row of letters carved by laser. This group of anti-counterfeiting marks has no development difficulty for our jewelry factory for many years.
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