Based in Tsukuba, Japan, Nihon Isk Co.,Ltd. is a long-standing manufacturer,... Based in Tsukuba, Japan, Nihon Isk Co.,Ltd. is a long-standing manufacturer, having been established in 1919. The company primarily produces and distributes fire-resistant and anti-theft vaults for both commercial and household use across Japan. Additionally, their product portfolio includes the fabrication and sale of dental equipment and steel furniture. Known as King Industrial Co., Ltd. until April 2014, the firm subsequently rebranded to its current name, Nihon Isk Co.,Ltd.