Yongcheng becomes the largest buyer of Vietnam's swill-cooked dirty oil products; how much black oil was "bleached" into feed and cooking oil?
Changhua prosecutors, following up on the case, found that 43,000 metric tons of swill oil from Vietnam's Dai Hanh Phuc Company had flowed into Taiwan, and the destinations remain impossible to fully trace to this day. According to customs import statistics, although Ting Hsin Oil is shown to be the largest buyer importing Dai Hanh Phuc oil products from Vietnam under the category of food inspection, if the import quantities declared as edible oil and feed oil are added together, Yung Cheng Company is likely the largest buyer of Dai Hanh Phuc oil products from Vietnam, accounting for nearly 20 percent.
What is worrying is that the current focus of public opinion is only on Ting Hsin Oil and Cheng I Oil, both belonging to the Ting Hsin Group, importing swill oil from Vietnam's Dai Hanh Phuc under the category of food to be used as edible lard, while the investigation has overlooked how Yung Cheng Company uses the channel of importing feed oil to "launder" Dai Hanh Phuc's swill oil into edible oil and feed oil. Exactly how much of the "laundered" swill oil has flowed into feed and edible oils and fats? The government and prosecutors should promptly clarify and disclose this
Health and Welfare Ministry passes the buck to prosecutors; different district prosecutors' offices handle cases separately; food safety efforts are not connected

Yung Cheng has transaction records with at least three major food companies; besides Cheng I, there are two others; the government should investigate promptly
Before prosecutors successfully sought the detention of Yung Cheng head Tsai Chen-chou, they had already gathered intelligence showing that Yung Cheng had transaction records with at least three major food companies, one of which was Cheng I Oil. As for the other two, their edible oil products also hold a certain market share and recognition, and they themselves are also in the feed business. Whether Yung Cheng's problem oil has flowed into the food processing chain, more than a month later, prosecutors, the Food and Drug Administration under the Health and Welfare Ministry, and the Council of Agriculture have still not given an answer.
Even more intriguing is that legislator Chen Chi-mai, during an interpellation in the Legislative Yuan on October 13, demanded that FDA Acting Director-General Chiang Yu-mei inquire about the reputation of Yung Cheng head Tsai Chen-chou in the Yunlin area. Does this mean that Yung Cheng's oil products, in addition to flowing into major food companies, have also gone to small regional edible oil and fat plants or underground factories? Regardless, government agencies and prosecutors should investigate and clarify this promptly.