DowDuPont profit falls 28 percent on delayed shipments, weak chemical demand

(Reuters) - DowDuPont Inc posted a 28 percent slump in quarterly profit on Thursday, as floods in the United States delayed seed shipments and demand for its specialized chemicals used by the auto and smartphone industries declined, sending shares down about 6 percent.The company, which sells everything from circuit packaging and display materials for smartphones to lubricants and break fluid for car makers, reaffirmed its full-year forecast for net sales to be about flat.Bernstein analyst Jonas..