Grandmother Zheng Shuzhen holds a portrait of her deceased grand-daughter at the Complaints Department of the Ministry of Health in Beijing in early May. Two people have been executed in China for their roles in a contaminated milk powder scandal that led to the deaths of at least six infants and sickened up to 300,000, state media has said.(AFP/File/Frederic J. Brown)AP – China executed two people Tuesday for their roles in a tainted milk powder scandal in which at least six children died and more than 300,000 became sick.