RETRACTABLE TECHNOLOGIES, INC. REPORTS 2003 DILUTED EARNINGS PER SHARE OF $0.20 LITTLE ELM, Texas, April 06, 2004—Retractable Technologies, Inc. (AMEX: RVP), a leading maker of safety needle devices, today reported diluted earnings per share of $0.20 for the year ended December 31, 2003, compared with a loss per share of