v3.26.1
Property and equipment, net
 12 Months Ended
Dec. 31, 2025
Property, Plant and Equipment [Abstract]  
Property and equipment, net Property and equipment, net
Property and equipment, net, consisted of the following:
As of December 31,
20242025
US$US$
Machinery and electronic equipment 39,512 50,915 
Transportation vehicles 576 786 
Office and other equipment 2,894 2,033 
Leasehold improvements7,456 8,922 
Construction in progress2,009 420 
Property and equipment52,447 63,076 
Less: accumulated depreciation (29,194)(35,063)
Less: impairment(1,398)(1,308)
Property and equipment, net 21,855 26,705 
Depreciation on property and equipment was allocated as follows:
Year ended December 31,
202320242025
US$US$US$
Cost of revenues 77 618 1,515 
Selling, general and administrative expenses 4,222 2,581 2,273 
Research and development expenses 3,317 4,681 3,878 
Total depreciation expenses7,616 7,880 7,666 

Impairment loss on obsolete and damaged equipment of property and equipment was allocated as follows:

Year ended December 31,
202320242025
US$US$US$
Selling, general and administrative expenses64 — — 
Research and development expenses965 144 119 
Total impairment loss1,029 144 119