Katswiri wogulitsa zinthu za graphite, graphite kwa EV, mafuta, ng'anjo ndi mafakitale ena aliwonse.

Ndi Graphite Yanji Mu Pensulo
(Ndi Graphite Yanji Mu Pensulo) Graphite ndi chitsulo chamtengo wapatali chomwe chimagwiritsidwa ntchito ngati chida komanso popanga zodzikongoletsera. Ndi chofewa, white color that is usually…



























































































