Kampani ya Guanghan N&D Carbide Co Ltd, yomwe idakhazikitsidwa mu 2004, ndi imodzi mwa makampani opanga zinthu omwe akukula mwachangu komanso otsogola ku China omwe amagwira ntchito makamaka ndi tungsten carbide yopangidwa ndi simenti. Timapanga zinthu zosiyanasiyana zogwiritsidwa ntchito pobowola mafuta ndi gasi, kuwongolera kayendedwe ka madzi ndi kudula.

Zipangizo zamakono, antchito odzipereka kwambiri, komanso luso lapadera lopanga zinthu zimapangitsa kuti pakhale ndalama zochepa komanso nthawi yochepa yogwirira ntchito zomwe zimathandiza kuti ND ipereke ntchito yabwino komanso yopindulitsa kwa makasitomala ake.