252100 Limestone flux;limestone other calcareous stone,for manufacture of lime/cement; 252210 Quicklime; 252220 Slaked lime; 252230 Hydraulic lime; 252310 Cement, not pulverized, known as cement clinkers 1; 252321 Portland cement, white, whether or not artificially coloured; 252329 Portland cement, nes; 252330 Aluminous cement