Jiro Ichioka

Sanwa Shutter Corp. manufactures & distributes shutters and doors. The Japan-based manufacturer specializes in heavy-duty and lightweight shutters. Through its subsidiaries, Sanwa Shutter also makes steel and aluminum building materials such as sliding doors, metal fittings, and shutter- and window-related pieces. The company targets builders of commercial property and residential housing, and offers a bundle of maintenance services. The company was founded in 1963 and is headquartered in Tokyo, Japan.

Part of Sanwa Holdings Corp., Sanwa Tajima Corp. is a metal processing company based in Tokyo, Japan. The Japanese company specializes in creating complex metal shapes for exterior building materials such as sash, balcony, eaves, pillars, roof, and external ceiling. The company uses various metal materials such as stainless steel, bronze, brass, aluminum, and titanium to create useful metal products from curtain walls to interiors, automatic doors, and large automatic rotating stainless steel front screens. The company also works on entrance systems such as doors and environmental modeling such as monuments and reliefs. The company has a unique finishing process where the oxide film is formed and colored in copper alloy, which enhances the color of the aging of the copper alloy and changes the texture and atmosphere to a tasty one.