Kasuwar lantarki ta graphite, wacce ta ragu a bara, ta yi babban koma baya a bana."A farkon rabin shekara, na'urorin lantarki na graphite sun kasance masu ƙarancin wadata."Yayin da tazarar kasuwa a bana ya kai tan 100,000, ana sa ran wannan dankon zumunci tsakanin...
Kara karantawa