To begin with, the linking circles in a molecular formula are symbolizing "WATER", and it is expressing clearly the will of HANSU. That is to say, HANSU's desire to enter the precision chemistry field as a professional company on the basis of water treatment. Second, the four circles are moving up and down, left and right. This is symbolizing the HANSU's resolution for growth and research. Lastly, the solid diamond shape is symbolizing the unity of all employees.