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v3.19.1

Deferred Tax Liability, Net (Details) - USD ($) | Mar. 31, 2019 | Dec. 31, 2018
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Summary of deferred tax liability |  |
Deferred tax asset — current (accrual of employee social insurance) | $ 190,376 | $ 186,779
Deferred tax liability — current (net investment in sales-type leases) | (789,887) | (1,639,057)
Deferred tax liability — current, net of current deferred tax asset | (599,511) | (1,452,278)
Deferred tax asset — noncurrent (depreciation of fixed assets) | 3,509,234 | 6,176,064
Deferred tax asset — noncurrent (asset impairment loss) | 6,524,615 | 15,003,497
Deferred tax asset — noncurrent (capitalized interest on CIP) |  | 2,531,120
Deferred tax asset — noncurrent (interest income in sales-type leases) | 884,020 | 658,307
Deferred tax asset — noncurrent | 3,067,507 | 3,114,083
Less: valuation allowance on deferred tax assets | (16,785,603) | (21,353,059)
Deferred tax assets — noncurrent, net | 6,172,288 | 7,747,873
Deferred tax liability — noncurrent (net investment in sales-type leases) | (6,136,086) | (9,335,941)
Deferred tax liability — noncurrent, net of noncurrent deferred tax assets | 36,202 | (1,588,068)
Total Deferred tax liability, noncurrent per ASU 2015-17 | (563,309) | (3,040,346)
PRC [Member] |  |
Summary of deferred tax liability |  |
Deferred tax asset — noncurrent | $ 8,972,515 | $ 1,617,861

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