Ngwa: The Single Driving High Pressure Roller Mill – Series PGM bụ nke a haziri ahazi iji gwerie clinkers ciment, dross mineral, clinker nchara na ihe ndị ọzọ n'ime obere granules, iji gwerie mineral ndị ahụ dara (iron ores, manganese ores, ọla kọpa). ores, lead-zinc ores, vanadium ores na ndị ọzọ) na ịkwanye ihe ndị na-abụghị metallic mineral (coal gangues, feldspar, nepheline, dolomite, limestone, quartz, wdg) n'ime ntụ ntụ.