Mavavu a slab ndi zinthu zofunika kwambiri pamakampani osiyanasiyana, makamaka omwe amakhudza kuwongolera kutuluka kwamadzi kapena mpweya.Ma valve awa amagwiritsidwa ntchito pazinthu zosiyanasiyana, kuphatikizapo kupanga mafuta ndi gasi, kukonza mankhwala, ndi kuyeretsa madzi ....
Werengani zambiri