This document summarizes concrete waterproofing products from TAMMS that use crystallization. It describes three main products - TAMMS "HEY'DI ADMIX –K” powder added during concrete mixing, TAMMS "HEY'DI" K-11 brush applied coating, and TAMMS SPEED PLUG for fast concrete repairs. The crystallization process makes concrete permanently waterproof without needing additional coatings. Key advantages are that the crystals become part of the concrete and withstand temperature and pH variations while increasing strength.