QINGZHOU DAZHONG GRINDING STEEL BALL LIMITED is the leading company in the production and marketing of GRINDING BALL and GRINDING CYLPEB in China and one of the major suppliers of GRINDING BALL and GRINDING CYLPEB in the world, founded in 1985, with annual production capacity of 100,000 metric tons. With 5 high-tech automatic production line, DAZHONG offers a diverse product mix of forged grinding ball, hot rolled grinding ball, casting grinding ball, high chrome/ medium chrome / low ...