| No. | Company Name | Contact Person | Tel |
|---|---|---|---|
|
1 |
China Certification & Inspection Group Co., Ltd. |
Chen Hong |
010-84603658 |
|
Ou Wenbing |
010-38290257 |
||
|
2 |
National Center of Quality Supervision & Inspection on Gold-Silver Products (Shanghai) |
Fang Mingshu |
021-64701390 |

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