Njirimara:
1. A na-eji ọkụ ọkụ maka nchekwa na nchekwa ọkụ nke mmiri aluminom;
2. Ngwá ọrụ mgbanwe okpomọkụ dị ike (teknụzụ patent), flue gas na-ekpofu ọkụ ọkụ ọzọ, nchekwa ike na nchebe gburugburu ebe obibi;