The company was engaged in air conditioning duct work 40 years, the accumulated decades of experience developed on the basis of aluminum foil compound insulation sandwich panel duct plate, tools and accessories, a range of products. Our own production, but also the efficiency and reliability of products obtained ISO 9001 international quality certification, and has been more than 32 countries world recognized and widely used. Aluminum foil compound insulation sandwich panel is a new, reliable operation and competitive duct plate, is an internationally accepted to replace the traditional duct plate. (more>>)