2523            |    Portland cement, aluminous cement, slag cement, supersulphate cement and similar hydraulic cements, whether or not coloured or in the form of clinkers.
2523.10.00   - Cement clinkers
2523.21.00     -- White cement, whether or not artificially coloured
2523.29.00     -- Other
2523.30.00   - Aluminous cement
2523.90.00   - Other hydraulic cements