First of all, when buying a mouthwash cup, you need to pay attention to the detailed functional design of the toothbrush, which is explained in the following three steps.
Nke mbu, mgbe ị na-azụrụ iko ntanye, ị kwesịrị ị paya ntị na nhazi ọrụ zuru ezu nke ezé ezé, nke akọwapụtara na usoro atọ a.