RETRACTABLE TECHNOLOGIES, INC. ANNOUNCES TWENTY PERCENT REVENUE INCREASE FOR THREE MONTHS ENDED MARCH 31, 2002 LITTLE ELM, Texas, May 9, 2002— Retractable Technologies, Inc. (AMEX: RVP) (“Retractable”) a leading maker of safety needle devices, today reported increased sales for the three months ended March 31, 2002. Net revenues for the