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18. SHARE-BASED PAYMENT (Details 3)
12 Months Ended
Dec. 31, 2020
Expected maturity of the option:  
Exercise in the 1st year 3 years 6 months
Exercise in the 2nd year 4 years
Exercise in the 3rd year 4 years 6 months
Exercise in the 4th year 5 years
Risk-free interest rate 6.29%
Volatility 27.08%
Expected dividends over shares 2.40%
Expected inflation rate 0.0337