China's consumer quality regulator said it has found an "unusual amount" of mercury in baby formula produced by Inner Mongolia Yili Industrial Group Co.
The Ministry of Health on Wednesday issued a ban on the use of bovine colostrum or dairy products made of the material in the production of baby formula.
Quality problems have been found in milk powder imported from New Zealand and other overseas producers, the Beijing News reported on Tuesday.
China's Ministry of Health (MOH) on Tuesday announced new caps on levels of 13 contaminants in 20 categories of food.
Yili, one of China's biggest dairy product manufacturers, suffered a setback when batches of baby formula were found to contain excessive mercury.
Infant twins fell ill day after being fed newly bought product; boy died.
A leading baby formula manufacturer says it opposes the Hong Kong government's proposal to ban all forms of advertising on formula for infants aged 6 months to 3 years old.
An agency in Hunan said that their previous tests showing that some imported baby formulas contain the banned additive Vanillin are invalid.
Another two batches of school uniforms have been found with cancer-causing dyes, according to Shanghai's quality watchdog.
Shanghai authorities have launched an investigation into the sources of school uniforms found to contain cancer-causing dyes.
Students at 21 primary and secondary schools in Shanghai have been warned to stop wearing their uniforms after tests showed they could be toxic.
Dyeing: School uniforms contain cancer-causing dye
Probe: Shanghai probe launched into toxic school uniforms
Carl Worker, New Zealand's ambassador to China, insisted that all of the country's dairy products are safe, including products exported to China.
Scare: NZ milk scare pinches Chinese consumers
Response: New Zealand reassures dairy food consumers