Shaanxi chenyu Biological Engineering Co.,Ltd. was established in 2009, is the oldest in Northwest China plant extract manufacturers. Have their own professional R & D team.  Main products are nicotine and tobacco flavors. We produce nicotine through the national ISO9001 quality certification ，pharmaceutical grade product can be achieved.  Our Products are exported around the world, occupying 47% of the Russian market.  we have high-quality products and good reputation, look forward to your cooperation.