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v3.19.1

Summary of Significant Accounting Policies (Details 2) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Revenues |  |  |
Total net revenues | $ 559,386 | $ 882,011 | $ 13,062,373
Parent [Member] |  |  |
Revenues |  |  |
Sale of medical equipment | 342,344 | 882,011 | 13,062,373
Provision of OSAS diagnostic services | 217,042 |  |
Total net revenues | 559,386 | 882,011 | 13,062,373
Cost of revenue |  |  |
Sale of medical equipment | (464,918) | (1,655,970) | (17,179,060)
Provision of OSAS diagnostic services | (292,983) |  |
Total cost of revenue | (757,901) | (1,655,970) | (17,179,060)
Gross loss |  |  |
Sale of medical equipment | (122,574) | (773,959) | (4,116,687)
Provision of OSAS diagnostic services | (75,941) |  |
Total gross loss | (198,515) | (773,959) | (4,116,687)
Depreciation and amortization expense: |  |  |
Sale of medical equipment | 535,800 | 1,328,403 | 1,232,263
Provision of OSAS diagnostic services | 291,830 |  |
Total depreciation and amortization expenses | 827,630 | 1,328,403 | 1,232,263
Capital expenditure |  |  |
Sale of medical equipment | 16,137 | 40,780 | 636,130
Provision of OSAS diagnostic services | 760,191 |  |
Total capital expenditure | $ 776,328 | $ 40,780 | $ 636,130

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