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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2025
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |
Schedule of property, plant and equipment estimated useful | ​
​ | ​ | ​ | ​ | ​
​ | ​ ​ ​ | ​ | ​ ​ ​ | Estimated
​ | ​ | ​ | ​ | residual
Category | ​ | Estimated useful life | ​ | value
Buildings |  | 20-50 years |  | —
Medical equipment* |  | 5-20 years |  | —
Electronic and office equipment |  | 3-5 years |  | —
Motor vehicles |  | 5 years |  | —
Leasehold improvement and building improvement |  | shorter of lease term or 5 years |  | —
| * | The cost of the asset is amortized over the estimated useful life. However, if ownership is transferred at the end of the lease term, the cost of the asset is amortized over the shorter of customer contract or the useful life of the asset which ranges from 5 to 20 years.
Schedule of estimated useful life for the intangible assets | ​
​ | ​ | ​
​ | ​ ​ ​ | Estimated
​ | ​ | useful life
Operating license |  | 20 years
Favorable leases |  | 12-17 years
Customer relationship |  | 5‑16 years
Operating leases |  | 9‑16 years
Software |  | 3‑5 years
Technology | ​ | 10 years

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