Masana'antar Kai Tsaye Mai Zane-zanen Man Fetur Mai Graphitized
Coke mai siffar graphitized (GPC)wani abu ne mai yawan sinadarin carbon wanda aka samar ta hanyar yin amfani da man fetur coke a yanayin zafi mai tsanani (yawanci sama da 2500°C). Wannan tsari yana canza danyen coke zuwa tsarin graphite mai lu'ulu'u, yana inganta yanayin wutar lantarki, kwanciyar hankali na zafi, da kuma juriyar sinadarai.
