Spined off "RK" as Chain and "EXCEL" as Rim into a separate company and started operation from July 1st. ●RK JAPAN Co., Ltd.(tel:03-6864-2071) ●EXCEL RIM Co., Ltd.(tel:03-6892-2881) We work toward producing high-spec products for our customers, Thank you for your continued business. *There's no change our business partner.