Ngaphansi kwezimo ezijwayelekile, kungakhathaliseki ukuthi amanzi ku-thermos angaphuzwa ngemva kwezinsuku ezintathu adinga ukuhlulelwa ngokusho kwesimo esithile. Uma amanzi ku-vacuum flask engamanzi ahlanzekile, futhi isivalo sivalwe ngokuqinile futhi sigcinwe, singaphuzwa ngemuva kokwahlulela ukuthi umbala, ukunambitheka, kanye ne-pr...
Funda kabanzi