the different types of industrial wood coatings are usually classified by technologies in terms their chemical nature or drying curing system technology pu polyurethane nc nitrocellulose ac acid up unsaturated polyester uv ultraviolet wb water based p powder main driving forces behind technological evolution regulations for voc especially european directive that will come completely into force 2007 and concern over harmful substances with general trends towards compliant alternative heterogeneous distribution used countries existence multiple substrates as well many final aspects depending on fashion which can be obtained using various application systems make quite complex finishing is an activity clearly differentiated from site decorative available to satisfy market demands although there important geographical differences use industry derived numerous factors such local tastes company size environmental pressures wooden 2 cray valley portfolio includes resins