Sinoref Holdings Limited, formerly Sinoref Holdings Ltd., is engaged in the manufacture of steel flow control products, which are used in the continuous casting process to protect, control and regulate the flow of molten steel. The operating segment of the Company is manufacture and sales of steel flow control products. Its products include Ladle Shrouds, Stoppers, Tundish Nozzles and Subentry Nozzles. Its principal operating entity is Sinoref (Yixing). Its subsidiaries include Sinoref (BVI) Limited, Sinoref (Hong Kong) Limited and Sinoref International (Yixing) Co., Ltd.