Alpha Pro Tech, Ltd. is a Canada-based company, which is engaged in developing, manufacturing and marketing a line of protective apparel garments, face masks and face shields and a line of construction weatherization building products for the housing market. Its products are sold both under the Alpha Pro Tech brand name as well as under private labels. Its products are classified into two business segments: The Building Supply segment, and The Disposable Protective Apparel segment. The Building Supply segment consists of construction weatherization products, such as house wrap and synthetic roof underlayment, as well as other woven materials. The Disposable Protective Apparel segment consists of a head-to-toe disposable protective garment (shoe covers, bouffant caps, coveralls, gowns, frocks and lab coats), face masks and face shields. It serves the markets such as pharmaceuticals, biopharmaceuticals, medical device manufacturing, lab animal research, construction supply and more.