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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2021
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |
Schedule of intangible assets except goodwill | ​
​ | ​ | ​
​ |  | Years
Software |  | 3-6
License |  | 3-20
Other intangible assets |  | 1-30
Schedule of property and equipment | ​
​ | ​ | ​
​ |  | Years
Buildings |  | 15-50
Leasehold improvements |  | 2-15
Switching equipment |  | 3-15
Telegraph, telex and data communication equipment |  | 5-15
Transmission installation and equipment |  | 3-30
Satellite, earth station and equipment |  | 3-20
Cable network |  | 5-25
Power supply |  | 3-20
Data processing equipment |  | 3-20
Vehicles |  | 4-8
Other telecommunication peripherals |  | 5
Office equipment |  | 2-5
Other equipment |  | 2-5
Schedule of estimated useful life of ROU assets | ​
​ | ​ | ​
​ |  | Years
Land rights |  | 50
Buildings |  | 15-40
Transmission installation and equipment |  | 3-25
Power supply |  | 3-20
Vehicles |  | 4-8
Others |  | 2-25
Schedule of disclosure of buy and sell rates used to translate monetary assets and liabilities denominated in foreign currency | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2020 | ​ | 2021
​ |  | Buy |  | Sell |  | Buy |  | Sell
United States Dollar (“US$”) 1 |  | 14,040 | ​ | 14,060 |  | 14,250 | ​ | 14,255
Australian Dollar (“AU$”) 1 |  | 10,738 | ​ | 10,756 |  | 10,353 | ​ | 10,359
Singapore Dollar ("SGD") 1 | ​ | 10,591 | ​ | 10,607 | ​ | 10,555 | ​ | 10,561
New Taiwan Dollar ("TWD") 1 | ​ | 499.61 | ​ | 500.46 | ​ | 515.04 | ​ | 515.4
Euro ("EUR") 1 |  | 17,209 | ​ | 17,239 |  | 16,125 | ​ | 16,137
Japanese yen ("JPY") 1 |  | 135.91 | ​ | 136.15 |  | 123.81 | ​ | 123.86
Malaysian ringgit ("MYR") 1 | ​ | 3,477 | ​ | 3,485 |  | 3,420 | ​ | 3,424
Macanese pataca (“MOP”) 1 | ​ | 1,756 | ​ | 1,761 |  | 1,772 | ​ | 1,777
Hong Kong Dollar (“HKD”) 1 | ​ | 1,811 | ​ | 1,814 |  | 1,828 | ​ | 1,828

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