Opto-Edu (Beijing) Co., Ltd.100043Why Us (指向 公司信息, 格式不好编辑, 另起一个页面Why Us)F-1501 Wanda Plaza, No.18 Shijingshan Road, Beijing 100043, ChinaOpto-Edu (Beijing) Co., Ltd.100043Why Us (指向 公司信息, 格式不好编辑, 另起一个页面Why Us)F-1501 Wanda Plaza, No.18 Shijingshan Road, Beijing 100043, ChinaOpto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing) Co., Ltd.Opto-Edu (Beijing
No. | Item | No. | Item |
1 | Magnetite | 11 | Hornfels |
2 | Limonite | 12 | Sphalerite |
3 | Graphite | 13 | Pyrite |
4 | Calcite | 14 | Sandstone |
5 | Slate | 15 | Orthoclase |
6 | Quartz | 16 | Malachite |
7 | Descloizite | 17 | Granite |
8 | Marble | 18 | Gypsum |
9 | Basalt | 19 | Barite |
10 | Hematite | 20 | Andesite |
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