Since 2000, on the basis of introducing foreign advanced technology and combined with our inherent technology, we successfully developed waste oil into bio-diesel technology which is advanced reaching to international standards. So far, our biodiesel technology is mature, and able to complete 5 -1000 t/d turnkey projects, and have achieved good benefits at home and abroad. The picture shows the 50 t/d bio-diesel project we completed in 2011.