Ho ea ka lipalo-palo tse tsoang ho International Copper Association, ka 2019, karolelano ea 12.6 kg ea koporo e sebelisitsoe koloing ka 'ngoe, ho tloha ho 14.5% ho tloha ho 11 kg ka 2016. Keketseho ea tšebeliso ea koporo likoloing e bakoa haholo ke ntlafatso e tsoelang pele ea theknoloji ea ho khanna. , e hlokang mo...
Bala haholoanyane