| OTC Tier | US Trading Venue | |
| OTCQX | Pink Sheets | OTO |
| OTCQB | Pink Sheets/BB | |
| OTCBB | BB | |
| Pink Sheet | Pink Sheets/BB | OTO |
| Grey Market | Grey | OTO |
截止9月底:OTC市场情况:
| OTC Tier | 汇总 | |
| OTCQX | 136 | Pink OTC Markets Inc |
| OTCBB Only | 27 | |
| OTCQB | 3878 | Pink OTC Markets Inc |
| Pink Sheets | 5810 | Pink OTC Markets Inc |
| Grey Market | 10974 | |
| 总计 | 20825 |
附件是PINK OTC的一些介绍。


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