The general manage Mr. Haixiao Zhu, will go to Cologne to participate in the 22nd international enamellers congress on June 1-19, 2012, and visited many factories which the main production range on cast iron, enamel water heaters, solar enamel water heaters, acid-resistant enamel components, acid enamel pipeline, enamel grill, enamel manufacturers of cold rolled and hot rolled sheet enamel and other enamel accessories, learning technology of advanced European process of enamel and enamel spraying and firing equipments.