<http://schema.org/description>
"We have a problem with a concentration of fine, dense pinholes in our powder film. The coating is a urethane-polyester that is applied over a part that has been electro-coated. The substrate is sheet metal. The problem is much worse when the powder film is heavier."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.pfonline.com/articles/pinholes-in-powder>