Elegant green technology sense PowerPoint background picture

This is a very technical sense of the PowerPoint background picture, the background of the author of the use of the image of the green as a design theme, with a variety of abstract patterns such as bubbles as a decoration, very similar to the game interface;

This is a very technical sense of the PowerPoint background picture, the background of the author of the use of the image of the green as a design theme, with a variety of abstract patterns such as bubbles as a decoration, very similar to the game interface;