Organizer : 香港寶石學協會
Topic :   翡翠玉石-古惑招數速破解
Date :   2021/12/17 - 2021/12/17
Detail

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- GAHK 週 年 大 會 通 告2021 (2021/07/14)
  Detail
- 香港標準翡翠測試方法 (2021/03/12)
  Detail
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