Superior Materials, Inc. announced that effective March 18, 2022, PQ Corporation, whom they have represented since 2018, will expand their sales responsibilities. This expansion will fill out Superior’s territory for the sale of Gasil and Silcron products, which they have been distributing in the Southeast and Midwest to include the mid-Atlantic and northeastern US.  Gasil and Silcron silicas will now be available alongside Neosyl and Sorbosil silicas in the majority of Superior’s sales terri...