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Ụlọ> ngwaahịa > Ngwa Casing > Njikọ casing
Njikọ Casing maka onye isi Rotary Drilling rig
Ụgwọ nke ụlọ ọrụ Kimdrill Piling (Changsha) Co., Limited Amụma nzuzo Usoro na ọnọdụ