Na’urorin Kyankyasar Ƙwai na Masana’antu (Ƙwai 500–1000)
Wannan rukuni ya ƙunshi manyan tsarin kyankyasar ƙwai masu ƙarfin ɗaukar ƙwai da yawa, waɗanda aka tsara don samar da kaji a matakin kasuwanci da kuma tsara sarrafa aikin kyankyasa.
An gina waɗannan tsarin masu amfani da hanyoyin samar da wuta da yawa domin samar da ingantaccen aiki na dogon lokaci, kuma suna iya aiki da wutar AC, batirin ajiyar wuta, da tsarin makamashi da aka haɗa da hasken rana.
