Zibo Dazhong Edible Chemical Co., LTD., founded in 1998, is a mainly by aluminum sulfate, ammonium alum, potassium alum, polyaluminium chloride, calcium hydroxide, etc. Series production, research and development, sales for the integration of the world's leading diversified chemical production enterprises, annual output of 150000 tons, including aluminum sulfate series products of alum series of products with annual capacity of 30000 tons, polyaluminium chloride with annual capacity of 20000 tons, calcium hydroxide with annual capacity of 20000 tons. Volkswagen chemical has passed the international ISO9000:2008 quality management system standard certification enterprise, and obtained the "national industrial product production license" in 2014, and obtained the "shandong domestic product concerning drinking water sanitation safety product hygiene license approval" in 2016. Meanwhile, in 2016, Volkswagen chemical was listed in qilu equity trading center, which was renamed as "zibo dazhong edible chemical co., LTD." from the original "zibo dazhong edible chemical co., LTD."