From Dec. 8 to Dec. 10, the general manager Mr. Baoqi Li was invited to join 5th Marine Materials and Corrosion Protection Conference in Zhuhai city of Guangdong province held by China Corrosion and Protection Association, who made the report of “High Efficient, Energy Saving and Green New Treatment Technology of Metal Surface- New Technology for Chromium-free Passivation of Super High Corrosion Resistant Aluminum Alloy”.