Poly Shield Technologies Inc., completes Installation Survey for the DSOX-15 Fuel Purification System for a third major maritime company. Boca Raton, Florida, Sept. 3, 2013 (GLOBE NEWSWIRE) -- Boca Raton, Florida, September 3, 2013 - Poly Shield Technologies Inc., (OTCBB:SHPR) announces that it has completed its third maritime company...