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Material accounting policies (Details 1)
12 Months Ended
Dec. 31, 2023
Buildings [member]  
IfrsStatementLineItems [Line Items]  
Useful lives of assets 25 years
Machinery And Equipments [Member]  
IfrsStatementLineItems [Line Items]  
Useful lives of assets 10 years
Vehicles [member]  
IfrsStatementLineItems [Line Items]  
Useful lives of assets 4 years
Fixtures and fittings [member]  
IfrsStatementLineItems [Line Items]  
Useful lives of assets 10 years
It Equipment [Member]  
IfrsStatementLineItems [Line Items]  
Useful lives of assets 5 years
Library Books [Member]  
IfrsStatementLineItems [Line Items]  
Useful lives of assets 10 years
Leasehold improvements [member] | Bottom of range [member]  
IfrsStatementLineItems [Line Items]  
Useful lives of assets 5 years
Leasehold improvements [member] | Top of range [member]  
IfrsStatementLineItems [Line Items]  
Useful lives of assets 20 years