Editor’s note: This is the fourth in a series of stories about what Eastman makes. KINGSPORT ‑ Eastman is celebrating the 10-year anniversary of one of its premier products ‑ Tritan. “What’s different about Tritan is it’s more durable and ends up in products that aren’t thrown away and has a longer life,” Scott Ballard, vice president and general manager of Specialty Plastics, said of Tritan.