Nkọwa dị mkpirikpi:

E guzobere na 1995.Ụlọ ọrụ na-emepụta ngwa ahịa GCS Rollerbụ onye nrụpụta kachasị na China. Anyị na-akwado n'ogbe na ahaziri, nwere ike ezipụta ezi ngwọta maka gị. Ọnụ ọgụgụ kacha nta anyị dị ntakịrị, nke nwere ike gboo mkpa nke ndị na-ere ahịa dị iche iche, ndị na-ere ahịa na ọrụ injinia.

Ihe mkpuchi gburugburuemebere ya site na iji tube rola carbon nke gbara waya nchara gburugburu, nke nwere ike melite nguzogide ike ma hichaa akpụkpọ ahụ na ndị na-akwado ya.eriri ebu ibu.