Yasekwa ngo-2004, iGuanghan N&D Carbide Co Ltd ngomnye wabavelisi abakhula ngokukhawuleza nabakhokelayo eTshayina abasebenza ngokukodwa nge-tungsten carbide efakwe isamente. Sigxile ekuveliseni uluhlu olubanzi lwezinto ezigugileyo zokugrumba ioyile negesi, ulawulo lokuhamba kwamanzi kunye noshishino lokusika.

Izixhobo zanamhlanje, abasebenzi abanomdla kakhulu, kunye nokusebenza kakuhle kwemveliso okungaqhelekanga kukhokelela kwiindleko eziphantsi kunye nexesha elifutshane lokufumana umsebenzi ovumela i-ND ukuba inike abathengi bayo inkonzo kunye nexabiso eligqwesileyo.