wholesale wooden jewelry rings 999 Gold shows that there is no coating without metal, what does unmanned material mean?

houston wholesale jewelry SummarynThe mark of gold jewelry includes manufacturers' code, materials and purity, such as: X Gold 990, XAU990, X -foot gold, etc. Among them, letters X are the manufacturer code.nWhen making jewelry with different materials or different purifications, materials and purity should be represented separately. When the jewelry cannot be printed due to too thin or too small, it should be attached to the logo containing the mark content.nConsultation record · Answer on 2021-12-03n999 Gold shows that there is no coating and no metal. What does unmanned materials mean? The mark of gold jewelry includes manufacturers' codes, materials and purity, such as: X Gold 990, XAU990, X -foot gold, etc. Among them, letters X are the manufacturer code.质 When the precious metal of different materials or different purity is made of jewelry, the material and purity should be represented separately. When the jewelry cannot be printed due to too thin or too small, it should be attached to the logo containing the mark content. Is it pure gold?