UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Cash flows from operating activities
Net (loss)/profit	$ (45,757)	$ (113,134)
Adjustments to reconcile net loss to net cash used in operating activities:
Loss on disposal of property, plant and equipment	412	810
Gain on debt restructuring	(792)	(8,157)
Interest expense	0	2,248
Depreciation of property, plant and equipment	24,169	22,442
Amortization of land use right and intangible assets	578	581
Noncash lease expenses	1,962	2,004
Share-based compensation	2,277	30,289
Changes in fair value of warrant liability and convertible loan	91,002	(1,240)
Allowance of credit losses	1,844	(237)
Write-down for obsolete inventories	4,724	3,032
Impairment loss of long-lived assets	1,400	88,039
Product warranty	13,376	10,353
Changes in operating assets and liabilities:
Notes receivable	(18,270)	9,162
Accounts receivable	(22,960)	18,157
Inventories	17,382	(4,144)
Prepaid expenses and other current assets	7,568	2,340
Amounts due to related parties	(5)	0
Operating lease right-of-use assets	(621)	(1,821)
Other non-current assets	1,070	9,037
Notes payable	4,225	(7,490)
Accounts payable	(6,813)	(46,882)
Advance from customers	(38,176)	(197)
Accrued expenses and other liabilities	20,289	(25,289)
Operating lease liabilities	(1,181)	(869)
Other non-current liabilities	1,783	7,679
Net cash generated from/(used in) operating activities	59,486	(3,287)
Cash flows from investing activities
Purchases of property, plant and equipment	(19,191)	(27,366)
Proceeds on disposal of property, plant and equipment	3,736	9,830
Proceeds from maturity of short-term investments	0	5,564
Net cash used in investing activities	(15,455)	(11,972)
Cash flows from financing activities
Proceeds from borrowings	70,050	70,373
Repayment of bank borrowings	(65,965)	(31,824)
Convertible loan	0	25,000
Repayment of bonds payable	(1,375)	0
Payment for debt issue costs	0	(525)
Deferred payment related to purchases of property, plant and equipment	(12,254)	(16,389)
Net cash (used in)/ generated from financing activities	(9,544)	46,635
Effect of exchange rate changes	(1,461)	(4,598)
Increase in cash, cash equivalents and restricted cash	33,026	26,778
Cash, cash equivalents and restricted cash at beginning of the period	109,601	88,189
Cash, cash equivalents and restricted cash at end of the period	142,627	114,967
Cash and cash equivalents	90,748	63,585
Restricted cash	51,879	51,382
Total cash, cash equivalents and restricted cash	142,627	114,967
Non-cash investing and financing activities
Payable for purchase of property, plant and equipment	$ 43,249	$ 59,408