Aspartate polyurea grout
The development of grout can be divided into: 1.0 era: cement-based grout; 2.0 era: water-based single component acrylic acid; 3.0 Era: Epoxy grout; 4.0 Era: Polyurea grout. At present, the American Sewing Industry Association has defined aspartic polyurea grout as a technology upgrade for epoxy grout in the era of grout 4.0, and issued the "Standard for Polyurea grout" in 2021
