7. INCOME TAXES (Continued)
Reconciliation between the income tax benefit computed by applying the PRC tax rate to income (loss) before income taxes and the actual income tax expense (benefit) were as follows:
| | | | | | | |
| | For the years ended December 31, | |
| | 2018 | | 2019 | | 2020 | |
| | US$ | | US$ | | US$ | |
Income (loss) before income taxes | | (46,166,668) | | (9,305,224) | | 22,029,792 | |
PRC statutory tax rate | | 25 | % | 25 | % | 25 | % |
Income tax at statutory tax rate | | (11,541,667) | | (2,326,306) | | 5,507,448 | |
Effect of income tax rate difference in other jurisdictions | | 439,213 | | 124,406 | | (773,402) | |
Super deduction of research and development expense | | (1,441,536) | | (2,479,428) | | (3,607,755) | |
Effect of preferential tax rates | | (237,495) | | (2,673,841) | | 1,837,667 | |
Effect of expenses not deductible for tax purposes | | 9,053,735 | | 1,425,861 | | 912,876 | |
Changes in valuation allowance | | 1,854,637 | | 2,573,942 | | (1,026,287) | |
Income tax expense (benefit) | | (1,873,113) | | (3,355,366) | | 2,850,547 | |
8. ORDINARY SHARES
The Company’s Amended and Restated Memorandum of Association authorizes the Company to issue 4,662,388,278 Class A ordinary shares and 337,611,722 Class B ordinary shares with a par value of US$0.00001 per share. The shareholders of Class A ordinary shares and Class B ordinary shares have the same rights except for the voting and conversion rights. Each Class A ordinary share is entitled to one vote, and is not convertible into Class B ordinary share under any circumstance; and each Class B ordinary share is entitled to twenty votes, and will be automatically converted into 1 Class A ordinary share under certain circumstances.
As of June 7, 2018, upon the Re-domiciliation described in Note 1, the Company had 33,170,968 Class A ordinary shares and 410,643,948 Class B ordinary shares issued and outstanding, respectively. In June 2018, the Company further issued 2,480,000 Class A ordinary shares and 107,863,347 Class B ordinary shares. In November 2018, 180,895,573 Class B ordinary shares were redesignated into Class A ordinary shares. As of December 31, 2018, the Company had 216,546,541 Class A ordinary shares and 337,611,722 Class B ordinary shares issued and outstanding, respectively.
In March 2019, the Group completed its initial public offering and received net proceeds of US$114,765,901, the Company newly issued 237,375,000 Class A ordinary shares (representing 15,825,000 ADSs), including 13,125,000 Class A ordinary shares issued through a private placement from an existing shareholder, IB Global Investment LLC, an affiliate of Interactive Brokers, and 29,250,000 Class A ordinary shares issued from exercising the over-allotment option by the underwriters.
Upon the completion of the initial public offering, 1,210,906,902 outstanding Series Angel, A, B-1, B-2, B-3 and C preferred shares were converted into 1,210,906,902 Class A ordinary shares on a 1-for-one basis, and 18,597,738 outstanding Series C-1 preferred shares were converted into 18,612,084 Class A ordinary shares, reflecting the anti-dilution adjustments to the conversion rate based on the initial public offering price of US$8.00 per ADS.
As of December 31, 2019, the Company had 1,777,218,449 Class A ordinary shares and 337,611,722 Class B ordinary shares issued and outstanding, respectively.
As of December 31, 2020, the Company had 1,794,357,434 Class A ordinary shares and 337,611,722 Class B ordinary shares issued and outstanding, respectively.