A worker produces A/H1N1 flu pyrolysis vaccine as the A/H1N1 flu vaccine is formally put into production by China's domestic pharmaceutical company Sinovac Biotech Ltd., also known as Beijing Kexing Bioproducts, Sep.3, 2009. The State Food and Drug Administration (SFDA) issued the license for Sinovac's vaccine called Panflu.1, after it passed SFDA's experts evaluation on August 31. [Xinhua]