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ZH Gems - Turquoise Pob zeb Chaw muag khoom thiab lag luam wholesale Turquoise Jewelry Gemstone tuam txhab txij li thaum 2010  

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Rau Cov Khoom Muaj Nqis, Mus Thoob Ntiaj Teb - Rau Cov Khoom Ib Txwm, Hauv Tebchaws

Rau Cov Khoom Muaj Nqis, Mus Thoob Ntiaj Teb - Rau Cov Khoom Ib Txwm, Hauv Tebchaws

Cov koom haum kuaj xyuas hauv tebchaws tseem ceeb suav nrog NGTC (National Gemstone Testing Center) thiab GIC (China University of Geosciences). Cov koom haum thoob ntiaj teb suav nrog GIA (Gemological Institute of America), GRS (GemResearch Swisslab), thiab SSEF (Swiss Gemmological Institute). Yog xav tau cov hniav nyiaj hniav kub muaj nqis, xaiv ib lub koom haum thoob ntiaj teb; rau cov khoom siv ib txwm, ib lub hauv tebchaws txaus lawm.

#Kev Kuaj Xyuas Hniav Nyiaj Hniav Kub #Cov Tub Ceev Xwm #NGTC #GIA #Daim Ntawv Pov Thawj #LongfengXu

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