Some dairy farmers interviewed this week in Hebei Province said it was an open secret that milk was adulterated, although many claimed they did not know that melamine was being used.

• 这周河北一些受采访的奶农称在牛奶里掺杂已经是公开的秘密，虽然部分人称他们不知道曾经用过三聚氰胺。