Exhibit 99 Marine Products Corporation Reports Stock Buyback ATLANTA, July 10 /PRNewswire-FirstCall/ -- Marine Products Corporation (Amex: MPX) today reported that during its fiscal quarter ended June 30, 2003 it had purchased for cash on the open market, and retired, a total of 95,000 shares of its $0.10 par value common stock. The stock buyback program authorizes the repurchase of up to one million shares. Marine Products Corporation (Amex: MPX) designs, manufactures and distributes premium-branded Chaparral sterndrive pleasure boats and Robalo outboard offshore fishing boats, and continues to diversify its product line through product innovation and strategic acquisition. With premium brands and a solid capital structure, Marine Products Corporation is prepared to capitalize on opportunities to increase its market share and to generate superior financial performance to build long-term shareholder value. For more information on Marine Products Corporation visit www.marineproductscorp.com . For information contact: BEN M. PALMER JIM LANDERS Chief Financial Officer Corporate Finance 404.321.7910 404.321.2162 irdept@marineproductscorp.com