a man is introducing  some new products on the desk
a white person with black dressing is giving demonstration using big video screen about some product placing on table
the young man is explaining about the product on the table
there is a man advertising some products while using a graph
a computer component reviewer talks aobut the improved performance of a recent upgrade
a clean cut  younger white guy  discussing  how his product works
a man stands near some products and points and looks at a screen behind him
a young man holding the new amd red and black box processor touting is 15% performance gain
a man talks about the performance of some products while point to a graph on a screen
a man is talking and showing about the product he is trying to sale
a guy wearing a black shirt looks at a chart behind him and talks
a guy wearing a black shirt talks and shows a chart on the tv screen
a man is talking about a product while showing stats on a screen
man is talking about his project on the screen
a boy in   black dress color wearing cloth   standing  speaking near white board audience watching  displaying on screen
a boy in   black dress color wearing cloth   standing  speaking near white board audience watching  displaying on screen
marketing a product  by showing the various aspects of it and finally lifts it up
marketing of the product by presenting statistics of the sales and qualities
a young man gives a presentation on new machinery and products
infomercial or presentation trying to sell a product and discussing the comparison