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jewelry box inserts wholesale
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clark wholesale costume jewelry You are talking about NGTC
The national inspection is the NGTC certificate, which is called the national jewelry and jade quality supervision and inspection center. For the NGTC certificate, it is not only a test of naked diamonds, but it can also test the detection standards of the finished jewelry GTC national inspection certificate such as diamond bracelets such as diamond bracelets. Valid in China
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