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 eyi ma jiri ndị na-akwado ya hichaa akpụkpọ ahụ.eriri ebu ibu.