The chemical toughening time of mobile phone glass is not standard,According to customer requirementsknowTo produce,Stress value Depth of stress layer warping Flatness Drop ball Four axis compression Multiple tests such as ferrule,Toughening timeAvenueThe preheating time and tempering temperature and annealing temperature and time are set according to the customer's requirements,And it's also with potassium nitratewithinIt has to do with the original film.Therefore, it is not comprehensive to simply ask the strengthening timeRongConsider.