Yasekwa ngo-2004, iGuanghan N&D Carbide Co Ltd yenye yabakhiqizi abakhula ngokukhawuleza nabakhokelayo eTshayina abasebenza ngokukodwa ngesamente yetungsten carbide. Sisebenza ngokukhethekileyo ekuveliseni uluhlu olubanzi lwenxalenye yokunxiba kwi-oyile & negesi yokomba, ukulawula ukuhamba kunye noshishino lokusika.

Izixhobo zale mihla, abasebenzi abanomdla kakhulu, kunye nemveliso ekhethekileyo yemveliso ikhokelela kwiindleko eziphantsi kunye namaxesha amafutshane avumela i-ND ukuba ibonelele abathengi bayo ngenkonzo ekhethekileyo kunye nexabiso.