| http://www.w3.org/ns/prov#value | - nation of ink, substrate and printing method to improve the lifespan of signage exposed to UV radiation such as sunlight.It is still another object of the invention to provide a novel process of screen printing onto a polyester protective film substrate to fabricate advertising signs which have substantially longer life than prior art advertising signs.BRIEF DESCRIPTION OF THE DRAWINGSThe aforemen
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