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Long-Term Investment (Details) - Rgene Corporation [Member] | 12 Months Ended |
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Dec. 31, 2018 | Dec. 31, 2017
Ownership percentage | 23.90% |
Accounting treatment | Equity Method |

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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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