Oriental Chain Mfg. Co., Ltd. manufactures and sells roller chains in Japan. Its product range includes standard roller, self-lubricating, extra heavy duty, mini pitch, corrosion- and heat-resistant, plastic, leaf, hollow pin, double pitch, attachment, top roller, bai speed, conveyor, circular side bow, and cable chains. It also offers OCM MX series standard and agricultural chains, roller chain with outboards, chain couplings, and sprockets. The company was incorporated in 1947 and is headquartered in Hakusan, Japan.