Xiamen UNT Duct Material Co., Ltd. was established in 2012, and located in the beautiful seaside city of Xiamen, China. We specialize in the research and manufacture of insulation products and air duct systems, such as PIR/PU/Phenolic duct panels, insulation boards, insulation pipe, CNC foam block cutting machine, insulated panels' production lines, etc. UNT zero ODP Polyurethane air duct system is specialized in the air distribution fields and the answer to economical technical and constructive question. Many different material and system such as composite pvc etc, had been developed as an alternative to the galvanized sheet metal used traditionally. Polyurethane pre-insulated has been developed and spread around the world. Its application has been gradually extended to all type of air distribution system such as industrial,commercial and civil. Following a course of continuous improvement from the technical and commercial point of view, UNT has renewed the system of construction of traditional galvanised sheet ducts, by developing the UNT ductal technology which makes use of pre-insulated aluminium panels,creating at the same time, accessories, tools and machinery intended for the construction and installation of air distribution ducts.