UNITED INDUSTRY LIMITED is a world leader in the production of magnesium sulfate , the largest producer of magnesium sulfate in China, operating facilities on the Laizhou, Shandong province where magnesium has been produced since 1989. With high quality and competitive price, we established the long-terms relationship with our clients. U&I guarantees sincerity, faithfulness, high quality and reasonable price to all our clients. Welcome friends from all over the world to cooperate with us by our mutual efforts.