● Gwirani ntchito pachithunzi chilichonse cha kulemera kwa gudumu - lead, zinki, ndi chitsulo.
● Pezani kapena kupyola miyezo yapamwamba kwambiri
● Mutu wake wa nyundo umapangidwa ndi pulasitiki yapadera yamtundu wa pulasitiki kuti ikhale yotetezeka komanso yosavulaza ya ma wheel counterweights ophimbidwa mwapadera a mawilo a alloy.
● Zinthu zamtengo wapatali zimatha kukupatsani zodalirika kwambiri