Nkwakọ ngwaahịa & nnyefe
1.Ntinye nkenke ngwaahịa
Igwe na-agbaze na-agbaze na-ekpo ọkụ bụ ihe na-etinye aka na ụlọ ọrụ mmepụta ihe nkedo ịgba ọtọ.The ọrụ nke akpaka injection na ịkpụzi na-enyere omenala akwụkwọ ntuziaka mmepụta dịkwuo-arụ ọrụ arụmọrụ na ọnụego nke ruru eru akụkụ, The euipment na-akwado a ike gluu injection na mfe ọrụ.It nwere ike ibelata oprator na-azọpụta ọrụ na-eri.
2.Echiche nkọwapụta
3.Ihe ngosi ngwaahịa
4.Ngwa
5.Nkwakọ ngwaahịa na nnyefe