Boca Raton, Fla.--Eagle Building Technologies Inc., which uses electron beams to sterilize millions of medical products, issued a press release Friday assuring corporate buyers that it was prepared to handle U.S. government demand for ion-beam sterilization equipment to eventually handle 300 million pieces of mail daily. Following on a New York Times report, the company issued the release in part to reassure businesses that the problem of killing anthrax or other deadly organisms through the mail would be solved as quickly as possible. Belgium-based Ion Beam Technologies Inc. and Anderson Products, Haw River, N.C., produce similar machines. Once the government demand is met, Eagle will begin to install systems for corporate mailrooms, said Eagle spokeswoman Paula Hennessy. Each system costs about $650,000.