Gushan started building a new biodiesel facility in Shanghai yesterday, and the 50,000-ton plant will help cement Gushan's place as China's largest biodiesel producer (by annual production capacity). Two more plants (30,000 tons each) are scheduled to open later this year, and the Beijing plant will be expanded by 50,000 tons. Gushan biodiesel's main feedstocks are "vegetable oil offal and used cooking oil." That's how the press release reads. Since offal usually means waste animal parts (or a delicacy, depending on where you live), I'm not sure if there is a comma missing or if the company is using the word to mean waste veggie oil. We'll see what Gushan's PR people can tell me.
[Source: Gushan Environmental Energy Limited]