| CONSTRUCCIONES MECÁNICAS J.SERRA, S.A. (SERRA SALT MACHINERY) is the parent company of HARDTECH GROUP. Founded in 1952, it is speciallized in the construction of equipments and plants covering all the process of salt treatment from its harvesting to its packing, going through the washing, centrifugation, purification, milling, drying, classification, iodation & additivation, compacting, etc. |