Tianjin YouLong Sci-Tech Development Co.,Ltd.,located in tianjin Science Park ,is a competitive player in the global specially and fine chemical market . Focusing on developing the innovative technologies for organic syntheses, YouLong has both the expertise and flexibility to produce a wide range of chemicals, such as fluorine organic chmeicals , APIs and so on. YouLong also performs custom synthesis ,contract manufacturing and toll manufacturing providing the bulk active ingredients and advanced intermediates.