Sanlu admits milk powder was contaminated, all products before August 6 recalled. Sanlu admits milk powder was contaminated, all products before August 6 recalled. On September 11, Shijiazhuang Sanlu Group issued a statement that some batches of Sanlu infant milk powder were found to be contaminated with melamine after self-inspection. The company decided to immediately recall all Sanlu infant milk powder produced before August 6, 2008.