JM.com is the site of Johns Manville, which is a Berkshire Hathaway company that manufactures and is marketer of premium-quality building insulation, commercial roofing, roof insulation, and special commercial products, industrial and residential applications products, including fiber glass building insulation, commercial roofing membranes and roof insulations, filtration media, and mats and reinforcements. All of these worldwide products can be found within this site, with the different sections offered. Within the MSDS Library section, you will be able to find all the Material Safety Data Sheet Library section, where you can select a specific product, which are divided by the kind of product, and you can select a product by looking into the different alphabetized listing of product trade names and material name. there are other sections such as the Labs and Services, Trade Show Information, Europe Non-woven and Fibers, Health, Safety and Environment, Career Opportunities and much more Johns Manville News.