CertainTeed Corporation
Construction materials, including insulation, roofing, ventilation, siding, windows, foundations, fence, decking and railing, garden, and ceilings. Interactive tools, distributor and contractor locators, detailed product catalogs, consumer and technical information.

Nan Tai Insulation Materials Group, Hong Kong
Manufacture of insulation paper, high temperature-resistant materials, electrician tapes, motor - noise elimination - insulation, insulating tube, and silicone rubber.