Hello ~ No, food-grade oil can't be gutter oil. Employees of Yihai Kerry generally eat oil by themselves. Waste oil is only used in chemical industry, so you can safely eat it ~ Yihai Kerry is a foreign company, but it won't harm China people. It is important that Yihai Kerry is at least the 239th among the top 500 companies in the world, and it is impossible to ruin its reputation because of petty profits. So please rest assured.