Mafuta ndi Gasi
Makampani amafuta & gasi amapangidwa ndi njira zambiri zakumtunda komanso kumtunda zomwe zimafuna kugwiritsa ntchito ma valve omwe ali othamanga komanso odalirika.Covnavalve ndiwothandiza kwambiri popanga ma valve omwe amagwiritsidwa ntchito popanga petrochemical, kugawa, kusungirako ndi kuyendetsa, kupanga zoyandama komanso ntchito zoteteza moto pakati pa ntchito zina zamafuta ndi gasi monga kuziziritsa.