LANDU LANDERCOLL Hydroxyethyl Methyl Cellulose(HEMC), also known as Methyl Hydroxyethyl Cellulose(MHEC), is a non-ionic, water-soluble cellulose ether. It can increase waterproof mortar bonding strength for substrate stability. In addition, it enhances flexibility and crack resistance, minimizing shrinkage cracks. Due to HEMC’s high thermal stability, waterproof mortar can adapt to more challenging environments that are frequently exposed to sunlight.