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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Cash flows from operating activities |  |  |
Net loss | $ (158,200) | $ (206,483) | $ (33,625)
Adjustments to reconcile net loss to net cash generated from/(used in) operating activities: |  |  |
Loss /(Gain) on disposal of property, plant and equipment | (14) | 13 | 207
Depreciation of property, plant and equipment | 19,811 | 19,975 | 16,097
Amortization of land use rights and intangible assets | 554 | 738 | 695
Noncash lease expenses | 2,214 | 0 | 0
Share-based compensation | 90,808 | 82,894 | 0
Changes in fair value of warrant liability | (979) | (2,469) | 0
Changes in fair value of Bridge Notes | 0 | 9,861 | 0
(Reversal)/allowance of doubtful accounts | 1,640 | 721 | (240)
Provision for obsolete inventories | 4,789 | 18,295 | 1,343
Impairment loss from property, plant and equipment | 1,798 | 2,443 | 567
Product warranty | 14,097 | 52,932 | 3,477
Changes in operating assets and liabilities: |  |  |
Notes receivable | 3,187 | 10,016 | 13,940
Accounts receivable | (38,924) | (11,844) | (3,599)
Inventories | (43,694) | (25,892) | 13,611
Prepaid expenses and other current assets | 3,628 | (10,980) | (1,693)
Amounts due from/to related parties | 85 | (84) | 1,872
Operating lease right-of-use assets | (19,375) | 0 | 0
Other non-current assets | (282) | (2,135) | (139)
Notes payable | 13,490 | 24,159 | (1,643)
Accounts payable | 7,146 | (2,499) | 3,818
Advance from customers | 53,022 | (971) | (1,395)
Accrued expenses and other liabilities | (24,674) | (5,947) | 2,256
Operating lease liabilities | 14,999 | 0 | 0
Other non-current liabilities | 946 | 2,218 | 0
Income tax payables | 0 | 0 | 7
Net cash generated from/(used in) operating activities | (53,928) | (45,039) | 15,556
Cash flows from investing activities |  |  |
Purchases of property, plant and equipment | (150,880) | (87,862) | (18,645)
Proceeds on disposal of property, plant and equipment | 5 | 0 | 13
Purchase of short-term investments | (25,070) | 0 | (4,635)
Proceeds from maturity of short-term investments | 0 | 0 | 5,593
Net cash used in investing activities | (175,945) | (87,862) | (17,674)
Cash flows from financing activities |  |  |
Proceeds from bank borrowings | 58,708 | 38,926 | 17,308
Repayment of bonds payable | (29,259) | 0 | 0
Repayment of bank borrowings | (24,482) | (37,568) | (17,815)
Loans borrowing from related parties | 0 | 8,426 | 18,889
Repayment of related party loans | 0 | (8,426) | (18,889)
Cash received from the trust account upon Merger, net of transaction costs (Note 3) | 0 | 222,629 | 0
Cash received from Private Investment in Public Equity (“PIPE”) investors upon Merger (Note 3) | 0 | 482,500 | 0
Payment to exited noncontrolling interests (Note 19) | 0 | (139,038) | 0
Issuance of Bridge Notes (Note 14) | 0 | 57,500 | 0
Net cash (used in)/generated from financing activities | 4,967 | 624,949 | (507)
Effect of exchange rate changes | (8,586) | 2,865 | 2,037
(Decrease) Increase in cash, cash equivalents and restricted cash | (233,492) | 494,913 | (588)
Cash, cash equivalents and restricted cash at beginning of the year | 536,109 | 41,196 | 41,784
Cash, cash equivalents and restricted cash at end of the year | 302,617 | 536,109 | 41,196
Reconciliation to amounts on consolidated balance sheets |  |  |
Cash and cash equivalents | 231,420 | 480,931 | 21,496
Restricted cash | 71,197 | 55,178 | 19,700
Total cash, cash equivalents and restricted cash | 302,617 | 536,109 | 41,196
Supplemental disclosure of cash flow information |  |  |
Interest paid | 5,135 | 2,686 | 1,969
Income tax paid | 0 | 0 | 0
Non-cash investing and financing activities |  |  |
Payable for redemption of noncontrolling interest | 0 | 0 | 124,316
Payable for purchase of property, plant and equipment | $ 29,183 | $ 18,500 | $ 15,122

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