... coupling, hydraulic safety coupling for locomotives etc, are appraised as top-grade reward of new products, outstanding reward, the first ... 850mm medium wide-strip mills for Xingtai Delong Steel & Iron Co., Ltd., Benxi Beitai Steel Company, Kunming Yuxi Steel & Iron Company, ... line of 950mm cold mill for Taishan Steel & Iron Group Co., Ltd., which enabled the company to enter the rank of producing ...