Ma valve angapo omwe amagwiritsidwa ntchito m'mapaipi a mafakitale, ma valve a mpira ali ndi ntchito zambiri zomwe zimagwiritsidwa ntchito, kaya ndi madzi, mafuta, gasi kapena mapaipi wamba wamba kapena zikhalidwe zogwirira ntchito zomwe zimakhala ndi tinthu tating'onoting'ono, kaya ndi kutentha kochepa, kutentha kwambiri, kapena kuwononga. chilengedwe, inu ...
Werengani zambiri