1. Okwu Mmalite: Mkpọchi waya ígwè Mkpọchi waya ígwè Mkpọchi waya ígwè bụ mbadamba ákwà silk nwere bellows, mbadamba bellows a nwere oghere 30 ma ọ bụ 45, mbadamba bellows ndị dị n'akụkụ dị iche iche. Mgbe a na-ejupụta ụlọ elu ahụ, a na-eji ihe mkpuchi ahụ site n'elu ruo ala hazie ya.
2. Ngwa: A na-etinye ya na mkpụcha ikuku maka nkewa siri ike na ihe na-ekpo ọkụ, a na-etinyekwa ya na mkpụcha ikuku na usoro mmịpụta, ọrụ nrụgide, petrochemical, fatịlaịza, wdg.