Electromagnet
Peb yog peb tshaj lij electromagnet thiab cov muag khoom hauv Suav teb, muab cov khoom lag luam zoo nrog cov nqi sib tw. Peb sov siab txais tos koj mus yuav cov customized electromagnet ua nyob rau hauv Suav teb no ntawm peb lub hoobkas. Tiv tauj peb rau kev hais.