Northeast Coating Technologies (NCT) is a provider of high quality PVD & CVD coatings, Salt Bath and Plasma nitriding service ... s. NCT is a subsidiary of the HEF-Durferrit group, a global leader in numerous surface treament technologies and tribology. NCT is situated in Kennebunk Maine and has a sales office in Ohio. NCT is sister company to HEF USA and Techniques Surfaces USA. read more