XML 57 R12.htm IDEA: XBRL DOCUMENT v3.23.1
PROPERTY, EQUIPMENT AND SOFTWARE, NET
12 Months Ended
Dec. 31, 2022
PROPERTY, EQUIPMENT AND SOFTWARE, NET  
PROPERTY, EQUIPMENT AND SOFTWARE, NET

5. PROPERTY, EQUIPMENT AND SOFTWARE, NET

Property, equipment and software consisted of the following:

As of December 31, 

    

2021

    

2022

US$

US$

Machinery and laboratory equipment

5,252,399

 

5,293,386

Leasehold improvements

1,152,743

 

1,055,271

Electronic equipment

1,863,956

 

1,863,963

Furniture and tools

81,467

 

29,684

Vehicles

87,680

 

80,266

Software

371,636

 

369,698

Total property, equipment and software

8,809,881

 

8,692,268

Less: accumulated depreciation and amortization

(5,322,264)

 

(5,909,305)

Net book value

3,487,617

 

2,782,963

Depreciation and amortization expenses recognized for the years ended December 31, 2020, 2021 and 2022 were US$858,408, US$1,125,032 and US$1,145,995 respectively.