Emepụtara igwe a maka nkwakọ ngwaahịa nke akpa akwụkwọ ntụ ọka na akpa akwụkwọ yiri igbe, ma nwee ike iji aka ya mezue ọrụ nke njuju, akara, mmụba, njirimara koodu mmanya, mbipụta, ịkọ aha, nzuzo, spraying, stacking wdg. nke quantitative e ji igwe, asatọ-ebe rotary nkwakọ igwe, linear ebu na nkwakọ igwe.

N'ịnabata elu kehoraizim nri usoro, na akpa njide nwere ike ịchekwa ọzọ akpa; Ntinye akpa na nri nri bụ ihe siri ike ma bụrụ ndị a pụrụ ịdabere na ya, na ọnụego nri dị elu na ọnụ ala dị ala; Ihe eji eme akpa ihe zuru oke, akara akara ahụ siri ike, wee bulie ọkwa ngwaahịa ahụ. Akụrụngwa ahụ kwesịrị ekwesị maka nkwakọ ngwaahịa nke ntụ ọka, granule na ntụ ntụ na akpa akwụkwọ, ebe a na-ejikarị nri, ọka, kemịkal na ụlọ ọrụ ọgwụ.