地沟油是如何重回我们的餐桌?

One oil producing company in East China's Shandong Province is one of the companies involved in the gutter cooking oil trade case. So far, nearly 700 tons of gutter oil has been seized and 9 people arrested. How this disgusting gutter cooking oil is processed?
中国东部山东省的一间产油公司是卷入地沟油交易案的其中一间公司。目前为止，警方缴获了近700吨地沟油，拘捕了9人。这些令人作呕的地沟油是如何加工的呢？

You are forgiven to go a bit off color when hearing these substances will finally be on people's dining tables. This factory began to process gutter cooking oil as early as 2003. Here, large amount of unused white substances are stored.
当你听到说这些东西最终将流向人们的餐桌时，你觉得有点不舒服是可以被谅解的。这间工厂早在2003年就开始加工地沟油。这里储存着大量未使用的白色物质。

Ting Shihui, a police officer, said, "This is a kind of adsorbent. As the gutter cooking oil is smelly and very thick. The smell will be removed by using these materials."
警员Ting Shihui表示：“这是一种吸附剂。因为地沟油有臭味，而且很粘稠。用了这种材料之后，臭味就会没了。”

According to the registration information, the factory can only produce biodiesel. However, this new machines indicate that what the company produced in the past few years was nothing but cooking oil made from gutter oil.
根据注册信息，这间工厂只能生产生物柴油。然而，这台新的机器表明，过去这几年，这间公司没有生产别的，就是生产用地沟油制成的食用油。

Feng Weifeng, a police officer, said, "Compared to biodiesel, it's much easier to produce cooking oil. Meanwhile, the cost of producing biodiesel is much higher. That's why the company chooses to produce poisonous cooking oil instead."
警员Feng Weifeng称：“和生物柴油相比，生产食用油容易多了。同时，生产生物柴油的成本高得多。这就是这家公司选择生产有毒食用油的原因。”

The company bought the gutter oil at a price of 6,000 yuan per ton. After processing, it can be sold at 8,000 yuan per ton, one third higher than the original price.
该公司以每吨6000元的价格买入地沟油。在加工之后，它可以卖到每吨8000元，比原价高出三分之一。

So far, the company has the ability to produce 50 tons of poisonous cooking oil, gaining profits of tens of millions of yuan every year. All the oil is sold on the market. In response, police have seized poisonous cooking oil sold to the market in Central China's Henan Province. But more tough work faces the police to thoroughly eliminate all the gutter oil sold in the market.
目前为止，这间公司每年能生产50吨有毒食用油，获利数千万元。所有的油都在市场上销售。作为回应，警方已经缴获了流向中国中部河南省市场的有毒食用油。但是警方还面临着全面清除流向市场的所有地沟油的更为艰巨的任务。