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Property and Equipment, net
6 Months Ended
Jun. 30, 2020
Property and equipment, net  
Property and Equipment, net

9.Property and equipment, net

Property and equipment consist of the following:

As of

    

December 31,

    

June 30,

2019

2020

$

$

Office equipment

397

391

Electronic equipment

1,482

1,858

Vehicle

76

75

Laboratory equipment

5,854

7,279

Manufacturing equipment

11,049

11,016

Leasehold improvements

7,528

7,478

Construction in progress

428

267

26,814

28,364

Less: accumulated depreciation

(5,461)

(7,347)

Property and equipment, net

21,353

21,017

Depreciation expenses for the six months ended June 30, 2019 and 2020 were $1,447 (unaudited) and $1,974, respectively.