1.Lifting system: Iji bulie ma belata ngwá ọrụ ndị na-egwupụta ihe, na-agba ọsọ casing, na-achịkwa ibu arọ, na-eri nri ndị na-egwupụta ihe, a na-eji usoro ihe na-ebuli elu. Usoro ebuli elu gụnyere winches, breeki inyeaka, cranes, blocks njem, nko, eriri waya, na var...
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