ST. LOUIS, MO - Silberline Manufacturing Co. Inc., headquartered in Tamaqua, PA, has expanded its relationship with Archway Sales, Inc., St. Louis, MO. Silberline is a producer and supplier of specialty high-performance aluminum and effect pigments. Archway’s territory will expand to include northern Ohio, Michigan and western Pennsylvania effective Nov. 20, 2008, in addition to its current territory, which includes Kansas, Missouri, Nebraska, Colorado, Utah, New Mexico, Minnesota, Wisconsin, Illinois, Iowa, Arkansas, northern Indiana, western Tennessee and northwestern Mississippi.