Ọnụ ahịa ụlọ ọrụ asphalt nke a na-akpọ coal tar nke a gbanwere n'ọkpụkpụ/bitumen/asphalt
GBASARA AKỤKỌ
Afọ nke Ahụmịhe
Ndị Ọkachamara Ọkachamara
Ndị Nwere Talent
Ndị ahịa obi ụtọ
NYOCHA ỤLỌ ỌRỤ
Nye Ngwaahịa Carbon dị elu
Anyị nwere ihe karịrị afọ 20+ ahụmịhe bara uru n'ịmepụta ngwaahịa carbon















