Conclusions. We demonstrated that using toluidine blue as an adjunctive tool for visual screening can detect significantly more oral submucous fibrosis and slightly more leukoplakia among high ...

China in 2013 imposed anti-dumping duties on toluidine imported from the EU, with rates ranging from 19.6 to 36.9 percent. In 2019, China opted to extend these duties for another five years ...

China's Ministry of Commerce said on Thursday that China would initiate an expiry review of anti-dumping measures on imports of European Union toluidine, used for dye, pharmaceuticals and pesticides.