ʻO YFB4 moʻo lepo pahū-hōʻoia ʻekolu-phase asynchronous kaʻa he mea hoʻopaʻa paʻa paʻa ponoʻī-fan-hoʻoluʻu squirrel-cage ʻekolu-phase asynchronous motor. Loaʻa iā ia nā hiʻohiʻona o ka liʻiliʻi liʻiliʻi, ke kaumaha māmā, ka hana hilinaʻi, nā hiʻohiʻona nani, a me nā mea ʻē aʻe. Nui, hana maikaʻi loa, holomua a kūpono hoʻi i ka hoʻolālā pahū, palekana a hilinaʻi hoʻi, etc.
ʻO nā mīkini pahū lepo ka mea kūpono i nā wahi i loaʻa ai ka lepo i ka lāʻau lapaʻau, textiles, metallurgy, grain processing, feed processing, fertilizers chemical, paka, papermaking, synthetic materials, building materials, etc.