Since its establishment as a manufacturer of bearing retainers, NKC (Nakanishi Metal Works) has developed a wide array of retainers to meet the growing needs of the bearing industry, including resin retainers to meet the need for weight reduction, and based on its retainer-related technology has expanded to the fields of rubber seals and metal seals. It has production sites in Japan, America and the Philippines and sells its products to customers throughout the world.