Mpweya zitsulo chitoliro ndi dzenje zitsulo, ambiri mipope zonyamulira madzi monga mafuta, gasi, madzi, mpweya, nthunzi, etc. Komanso, kuchita kupinda, torsional mphamvu, mbandakucha, choncho chimagwiritsidwa ntchito popanga. za zida zamakina ndi zomangamanga. Carbon steel pi...
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