Flint Group increased prices on all offset inks and coatings in North America. Percent increases vary across product lines and technologies based on the raw materials make-up.   “The strongest raw material headwinds we face today can be grouped into four categories,” says Michael Podd, chief procurement officer of Flint Group’s CPS Inks division:   The U.S. tariffs against China: “These tariffs affect a number of key materials used in printing inks,” Podd said. The recently imposed ta...