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v3.8.0.1

Consolidated Statements of Cash Flows - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Operating activities |  |  |
Net loss | $ (50,384,176) | $ (37,512,212) | $ (18,021,737)
Adjustments to reconcile net loss to net cash provided by operating activities: |  |  |
Depreciation of property and equipment | 545,705 | 198,224 | 125,774
Amortization of intangible assets | 2,422 | 781 | 733
Share-based compensation | 9,931,106 | 4,925,278 | 2,701,404
Share of loss from equity method investment | 249,652 |  |
Loss on disposal of property and equipment | 12,961 |  | 38,417
Change in fair value of warrants | (200,000) | 1,920,000 | 1,980,000
Changes in operating assets and liabilities: |  |  |
Prepayments and other current assets | (810,979) | (74,507) | 33,713
Long term deposits | (38,845) | (267,980) |
Value added tax recoverable | (3,685,216) | (1,376,921) |
Accounts payable | 8,444,347 | (929,716) | 1,287,687
Other payables | 1,950,152 | 242,187 | 327,500
Deferred income | 1,615,690 | 716,835 | 61,599
Net cash used in operating activities | (32,367,181) | (32,158,031) | (11,464,910)
Cash flows from investing activities: |  |  |
Purchase of cost method investment |  | (500,000) |
Disposal of cost method investment | 500,000 |  |
Purchase of equity method investment | (1,900,000) |  |
Purchase of property and equipment | (9,102,330) | (2,223,882) | (738,470)
Disposal of property and equipment | 82,789 |  |
Purchase of intangible assets | (14,690) | (5,615) |
Net cash used in investing activities | (10,434,231) | (2,729,497) | (738,470)
Cash flows from financing activities: |  |  |
Proceed from issuance of convertible preferred shares, net of issuance cost | 29,100,000 | 106,200,000 | 18,278,572
Proceeds from exercise of warrants | 1,000,000 |  |
Proceeds from exercises of stock options | 65,500 |  |
Proceeds from issuance of ordinary shares upon initial public offering | 160,424,994 |  |
Payment of initial public offering costs | (2,730,299) |  |
Net cash provided by financing activities | 187,860,195 | 106,200,000 | 18,278,572
Effect of foreign exchange rate changes on cash and cash equivalents | 652,595 | (524,398) | (66,770)
Net increases in cash and cash equivalents | 145,711,378 | 70,788,074 | 6,008,422
Cash and cash equivalents - beginning of the year | 83,948,770 | 13,160,696 | 7,152,274
Cash and cash equivalents - end of the year | 229,660,148 | $ 83,948,770 | $ 13,160,696
Supplemental disclosure on non-cash investing and financing activities: |  |  |
Payables for purchase of property and equipment | 413,657 |  |
Payables for initial public offering costs | 40,000 |  |
Conversion of convertible preferred shares | 163,607,144 |  |
Exercise of warrants | $ 3,700,000 |  |

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- Definition The cash inflow from issuance of preferred stocks identified as being convertible into another form of financial instrument, typically the entity's common stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585 + Details
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- Definition Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=96867065&loc=SL79508275-113901 + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock warrants. + References No definition available. + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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- Definition Exercise of warrants. + References No definition available. + Details
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- Definition Increase decrease in long term deposits. + References No definition available. + Details
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- Definition Payables for initial public offering costs. + References No definition available. + Details
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- Definition Payments to acquire cost method investment. + References No definition available. + Details
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- Definition Proceeds from sale disposal of cost method investment. + References No definition available. + Details
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