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Consolidated balance sheets - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Current assets:    
Cash and cash equivalents $ 1,766,573 $ 442,116
Short-term investments 0 744,676
Accounts receivable 18,029 5,165
Inventories 11,114 13,144
Prepayments and other current assets 12,887 10,935
Total current assets 1,808,603 1,216,036
Restricted cash, non-current 743 743
Investments in equity investees 1,070 1,279
Prepayments for equipment 1,846 274
Property and equipment, net 31,642 29,162
Operating lease right-of-use assets 17,015 17,701
Land use rights, net 7,849 7,908
Intangible assets, net 1,733 1,532
Long term deposits 891 862
Value added tax recoverable 23,823 22,141
Total assets 1,895,215 1,297,638
Current liabilities:    
Accounts payable 125,621 62,641
Current operating lease liabilities 6,371 5,206
Other current liabilities 61,925 30,196
Total current liabilities 193,917 98,043
Deferred income 17,632 16,858
Non-current operating lease liabilities 11,968 13,392
Total liabilities 223,517 128,293
Commitments and contingencies
Shareholders' equity    
Ordinary shares (par value of $0.00006 per share; 500,000,000 shares authorized, 94,758,189 and 87,811,026 shares issued and outstanding as of June 30, 2021 and December 31, 2020, respectively) 6 5
Additional paid-in capital 2,799,318 1,897,467
Accumulated deficit (1,109,837) (713,603)
Accumulated other comprehensive loss (16,865) (14,524)
Treasury Stock (924)  
Total shareholders' equity 1,671,698 1,169,345
Total liabilities and shareholders' equity $ 1,895,215 $ 1,297,638