Zogulitsa za Chotupa chofuula , ndife ojambula apadera ochokera ku China, Graphite , Chipika chachikulu cha graphite ogulitsa / fakitale, malonda apamwamba a Chotupa chofuula R & D ndikupanga, tili ndi ntchito yabwino yotsatsa malonda ndi chithandizo. Yembekezerani kuti mugwirizane!