Shenhai Kuphulika-Umboni
Kuwala kosaphulika kumatha kuwunikira popanda waya wapansi, komabe kuyika uku kukulephera kukwaniritsa miyezo yokhazikika yotetezedwa yomwe zida zamagetsi zomwe sizingaphulike.
Kuonetsetsa chitetezo, Dziko Loteteza (PE) kugwirizana kumamangiriridwa ku chotengera cha kuwala kosaphulika. Pakachitika kutayikira, yapano idapangidwa kuti izipatutsa kudutsa mzerewu kupita pansi, kugwira ntchito mofanana ndi waya wosalowerera komanso kupereka ulalo wolunjika ku kuwala.