Test tube measuring cup chemical instrument PowerPoint background picture

The background picture of this slide, a chemical laboratory in the test tube and measuring cups and other items, PPT background picture theme to black and red-based. Appropriate use of color gradient as decoration. HomePPT provide widescreen and ordinary screen two resolution JPG format pictures for users to download free of charge;

The background picture of this slide, a chemical laboratory in the test tube and measuring cups and other items, PPT background picture theme to black and red-based. Appropriate use of color gradient as decoration. HomePPT provide widescreen and ordinary screen two resolution JPG format pictures for users to download free of charge;