展会时间:2017-12-01 至 2017-12-04
据著名矿物晶体学者郭周平教授介绍,矿物晶体的博物馆藏级,须保持95%的原矿完整度。本次所展出的矿物晶体均是出自天然,无人工技术手段修饰,类似的全球矿物界 ...
|小黑屋|展会港
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