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Dredge Hose Yoyandama
Amagwiritsidwa ntchito pochotsa zinyalala komanso kuyeretsa matope m'mitsinje, nyanja, madoko. Izi zili ndi ubwino wokhala ndi mphamvu zonyamula katundu, kukana kwa dzimbiri, kukana kwa okosijeni, moyo wautali wautumiki, ndi mtengo wochepa wokonza, zomwe zimapangitsa kuti zikhale zida zauinjiniya mu engineering yapano yosungira madzi.