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PROPERTY, PLANT AND EQUIPMENT, NET
 12 Months Ended
Dec. 31, 2023
PROPERTY, PLANT AND EQUIPMENT, NET  
PROPERTY, PLANT AND EQUIPMENT, NET

9.PROPERTY, PLANT AND EQUIPMENT, NET

Property, plant and equipment consist of the following:

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​

​

​

​

​

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As at December 31, 

​

​

2022

​

2023

​

2023

​

    

RMB

    

RMB

    

US$

Buildings

 

782,560

​

807,737

​

113,767

Medical equipment

 

532,165

​

522,385

​

73,576

Electronic and office equipment

 

58,038

​

58,999

​

8,310

Motor vehicles

 

3,717

​

3,718

​

524

Leasehold improvement and building improvements

 

75,032

​

81,766

​

11,517

Construction in progress

 

2,131,991

​

2,466,320

​

347,374

Total

 

3,583,503

​

3,940,925

​

555,068

Less: accumulated depreciation

 

(308,210)

​

(385,042)

​

(54,232)

Impairment charges

 

(16,148)

​

(9,010)

​

(1,269)

​

 

3,259,145

​

3,546,873

​

499,567

​

Depreciation expenses were RMB64,288, RMB 88,692 and RMB82,124 (US$11,567) for the years ended December 31, 2021, 2022 and 2023, respectively. Impairment loss of RMB nil, nil and nil were recognized for network operating segment and impairment loss of nil, nil and nil for hospital operating segment for the years ended December 31, 2021, 2022 and 2023, respectively.

For the years ended December 31, 2021, 2022 and 2023, impairment of RMB2,645, nil and RMB7,138 (US$1,005) was written off for network operating segment upon the disposal of medical equipment and construction project, and impairment of nil, nil and nil was written off for hospital operating segment.

The Group held equipment under operating lease contracts with customers with an original cost of RMB128,486 and RMB124,894 (US$17,591) and accumulated depreciation of RMB100,681 and RMB104,174 (US$14,673), as of December 31, 2022 and 2023, respectively.

The total net book value of the Group’s property, plant and equipment pledged as collateral for other borrowings as of December 31, 2022 and 2023 was RMB412,683 and RMB391,056 (US$55,079) (note 18), respectively.

The total net book value of the Group’s construction in progress pledged to secure bank and other borrowings as of December 31, 2022 and 2023 was RMB1,754,217 and RMB2,027,277 (US$ 285,536) (note 18), respectively.