Milk contaminated with Carcinogens (Shanghai)

China's biggest Diary corporation 'Meng Niu' producing 'Modern Meadow' was found with milk contaminated with carcinogens. Due to this, the sales for local milk has drastically fallen leading to a 20% rise in the sales of Imported milk (ICS News).

carcinogen
Any natural or artificial substance that can produce or trigger cancer, as arsenic, asbestos, ionizing radiation, ultraviolet rays, x rays, and many derivatives of coal tar(Webster Dictionary).