01 Ultramarine Blue Pigments
Ultramarine blue nwere ọmarịcha ọkụ ngwa ngwa, ngwa ngwa ihu igwe, iguzogide alkali na nkwụsi ike okpomọkụ ruo 350 ℃. Ka ọ dị ugbu a, a na-eji ultramarine blue eme ihe na ngwaahịa rọba na rọba n'ihi ezi mgbasa na nchekwa ya. Ọ nwere ihe kacha mma maka ...