Is Guangdong Jewelry, Jade and Precious Metals Testing Center Reliable?

Reliable. According to official website, Guangdong Jewelry and Precious Metals Testing Center and Guangdong Jewelry and Precious Metals Testing Center are one of the top large-scale jewelry and precious metals testing institutions in China, with formal business licenses and formal testing channels. Guangdong Jewelry and Precious Metals Testing Center was established in 1995, and obtained CAL approval authorization certificate and CMA measurement certification certificate in 1996.

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