Na-etipịa

Enwere ọtụtụ ọrụ nke bọket nyocha, gụnyere nyocha, nchicha, ịgwakọta, ịkpali, ikuku, wdg, mana isi ọrụ ya bụ naanị abụọ, otu na-enyocha ma nke ọzọ na-akụpịa. Ịwụ nyocha ahụ nwere ọrụ ịkụpịa ihe dị ike, nke nwere ike ịkụpịa nkume ndị sitere n'okike dị ka granite, marble, basalt, wdg, yana mkpofu ihe owuwu dị ka ciment, kọnkịta, brik, wdg, ma nwee ike ịkụpịa ụfọdụ ihe ndị ọzọ na-adịghị mma. dị ka asphalt, ceramik, ogbugbo, wdg Chere.

Yichen bụ ụlọ ọrụ ndị China na-emepụta ihe, na-etinye aka na nyocha, mmepe na imepụta ihe mgbakwụnye ihe. Ahịrị ngwaahịa ya bụ isi gụnyere bọket crusher, bọket nyocha, ndị na-egbutu ịgbà, augers na sistemu nhazi ala.