Sanwa 

Sanwa Holdings Corporation, through its subsidiaries, manufactures and sells steel construction materials for commercial and residential construction in Japan, North America, Europe, and the rest of Asia. The company offers door openers; automatic, industrial sectional, garage, steel, condominium, and lightweight sliding doors; partitions and toilet booths; waterproofing products; rolling, high-speed sheet, lightweight, heavy-duty, and window shutters; aluminum and stainless-steel facades; curtain walls; and mail and delivery boxes. It also provides shutter-related, storefront, window, residential door, exterior, and residential garage door products; and openers for garage and other doors, as well as engages in the maintenance and service business. The company was founded in 1956 and is headquartered in Tokyo, Japan.