In the initial concept, when environmental protection was mentioned, leaves were always the first thing that came to mind, so the shape of a leaf was used to form the uppercase letter “E”. The main body was also filled with a green color scheme, giving it a natural appearance. This led to the development of the second version, where the irregular shape of the leaves was replaced with regular triangles to create the pattern, and different colored areas were used to distinguish the three letters “ECO”. This part of the design was inspired by the display screens of elevators. Water droplet shapes are also frequently used when discussing environmental protection. The third version initially consisted of a gradient circle surrounding three capital letters, but it was later decided to use water droplet shapes while retaining the varying thickness of the lines, making the pattern appear more dynamic.