SELECT melamine_content_mg_kg_ FROM table_name_31 WHERE samples_failed > 1 AND product = "英雄牌嬰幼兒配方乳粉"
Apa kandungan melamin dari bubuk susu susu bubuk merek pahlawan yang gagal lebih dari 1 sampel?
CREATE TABLE table_name_31 (melamine_content_mg_kg_ VARCHAR, samples_failed VARCHAR, product VARCHAR)