ເຄື່ອງຜະລິດພະລັງງານ ໝາກ ໄມ້
Gelsonlab HSTM-075 Education Science Toys ເຄື່ອງຜະລິດພະລັງງານ ໝາກ ໄມ້ Fruit clock
Through the ເຄື່ອງຜະລິດພະລັງງານ ໝາກ ໄມ້, 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.