The head of one of China's largest meat processing companies has been receiving special reports via text message every morning for the last two years.

The messages are brief quarantine reports of his company's products, including how many pigs were found infected with a disease or had excessive levels of fodder additives, said Wan Long, chairman of Shuanghui Group.

"Of the 170,270 pigs purchased on March 5, 29 were found to have disease and none had clenbuterol," read a text he received on March 6.