Custom Color Pencils Pouch,Sketch Pencils Pouch,Push Pull Pencil Sharpener,4Pcs Sculpture Modeling Stylus Zhoushan Shenglan Trade Co., Ltd.  , https://www.seamiart.comThe PPT provides a comprehensive introduction to how to identify adulterated wines, including two analytical methods: stable isotope mass spectrometer and nuclear magnetic resonance. Identify adulteration from several dimensions, namely: water mixing, sugar mixing, origin identification. Hope to help users in the field of food testing.