sanlu group, a leading chinese dairy producer, said it had found in its self-check that some of its baby milk powder products were contaminated by tripolycyanamide.
it has decided to recall all the baby milk powder it had produced before aug. 6 this year.
recently, quite a number of infant kidney stone cases were reported in gansu and other provinces. investigations showed that most of the baby patients had drank the sanlu formula before.
at least one baby in the northwest province had died as a result of kidney stones.
有用的句子：
《今日美国》报道，中国国家质检总局周五表示，中国近期的产品污染危机已波及液态奶产业。
china's latest tainted product crisis has spread to its liquid milk industry, the country's quality watchdog said friday, usa today reported.
危机已经扰乱了奶制品产业，自奶粉中发现工业化学品三聚氰胺后，厂家纷纷开始大量回收奶粉。
the crisis has already roiled the dairy industry, with widespr