How did Taiwan find plasticizer pollution?

Researcher Yang from Taiwan's Food and Drug Administration found unusual signals in the drug sample book sent by the local health bureau. The Food and Drug Administration immediately took the initiative to conduct investigations with local health units and inspection units to trace the source. After inspecting more than ten kinds of raw materials, it was found that it was one of the food additives produced and sold by Yushen Perfume Co., Ltd. Caused by the same