Meyvə Enerjisi İstehsalçısı
Gelsonlab HSTM-075 Education Science Toys Meyvə Enerjisi İstehsalçısı Fruit clock
Through the Meyvə Enerjisi İstehsalçısı, let the children know the phenomenon of electron flow formed by the replacement of copper, iron and zinc plasma with different materials in acidic or alkaline liquid.