Fineness: Granular 100% passes through 10 target quasi-sieve, and the material on 14 target quasi-sieve accounts for more than 50%; Powder: 95% passes through 80 mesh sieve 3.3. Fineness: powder, good fluidity, 95% passes through 40-target quasi-sieve, and 20% passes through 100 target quasi-sieve; Granularity: uniform, with 90% passing through 10 mesh sieve and 20% passing through 30 mesh quasi-sieve;