Quartz Stone Can Be Divided Into Three Grades: A, B And C. Among Them, The Physical And Mechanical Properties Of Grade B And C Quartz Stone, Such As Stain Resistance, Acid And Alkali Resistance, Wear Resistance, Etc., Have Not All Met The Standard Requirements, So Grade B And C Quartz Stone Can Not Be Used For Indoor Decoration. Of The Three Grades, Only Grade A Can Be Used For Normal Indoor Decoration. It Has Good Wear Resistance, Scratch Resistance, Heat Resistance, And Strong Permeability And Acid And Alkali Resistance. It Is A Relatively High-Quality Decorative Material.