Rolf C. Hagen (USA) Corp. has appointed Tony Hartian as vice president of sales and Christopher Armstrong as director of PetSmart operations. Hartian comes to Hagen from Central Garden and Pet/Four Paws, where he worked for 24 years and was most recently the vice president of sales. Before coming to Hagen, Armstrong was the national account manager for Central Garden and Pet, calling on both PetSmart and Petco for over 15 years. “We are thrilled to welcome Tony Hartian and Christopher Armstrong to the Hagen USA family,” said Rolf Hagen Jr, president and CEO of Rolf C. Hagen Inc.