1. N'ụzọ dị iche na ọrụ-site ogbunigwe, akọrọ ngwa agha a na-akpọ tupu mbuaha ngwa agha, nke na-emepụta na factory na raara onwe ya nye ụlọ ọrụ na batching na agakọ nke Efrata na ukwuu na-achịkwa usoro. Ọ ga-eji na-dị nnọọ site na-agbakwụnye na mmiri ọrụ na saịtị.
2. Ọ nwere uru nke na-agbanwe agbanwe àgwà, na-achịkwa yiri nkata, na-azọpụta oge na ọrụ na-eri. Site na-agbakwụnye iche iche chemical nwekwara, o nwere ezi Njirimara nke nkekọ, kwes na now mkpuchi, ịgbawa-eguzogide, workability, Mmiri-njigide, na-eyi na-àmà, mgbochi corrosion, wdg
3. kpọrọ nkụ ngwa agha nwere ike dakọtara dị iche iche iche iche nke ọhụrụ ewu ihe site n'imeziwanye Nwa. Ọma ndị a Njirimara bụghị naanị mma ụlọ si àgwà na ndụ nke ukwuu, ma na-ibelata ojiji nke ngwa agha na a nnukwu ogo.
4. The ina akọrọ ngwa agha amụbawo ngwa ngwa ruru ya pụtara ìhè n'uru atụnyere na ngwa agha nma ọrụ-na saịtị.