A.0.015%~0.025% B.0.02%~0.03% C.0.025%~0.035% D.0.027%~0.037%
A.產品品種指標 B.產品質量指標 C.產品產量指標 D.產值指標
A.≤1.0 B.2.7~2.8 C.3.0~3.2 D.≥3.5