Refro40 and Refro50 products of the Refro family maintain their integrity up to minimum temperatures of 1250 °C and 1450 °C, respectively. The product offers various advantages for refractory implementations, including high thermal resistance, high early and ultimate strength, high abrasion resistance, acid and alkali resistance, and ease of application even in winter conditions with sub-zero air temperatures (down to -5 °C).