testing it
This would be the same as a warehouse person. Someone who maintains inventory levels of product(s) in readiness for that product to be called up on for use.
advertisement
Someone would contract a marketing expert if they wanted to better market a product. The better that a person can market their product, the more likely they are to sell their product better.
Aesthetics, what does the product look like. Cost, how much does the product cost to buy? Customer, who would buy or use the product? Environment, where would the product be used or stored? Size, how big or small is the product? Safety, how safe during normal use? Function, how does the product work? Material, what is the product made of?
put your hand on it
An infomercial is a longer commercial that provides alot of information on a product usually has someone trying out the product and providing suggestions for use, etc.
No; it would imply an association with that product that does not exist.
someone may use a shield to protect or cover something
how would you use a hundredths grid to find the product 0.3x0.8 ?
That would be a part of your cost of the product that you are making and would be added to all of your other costs of the product to be your cost basis after the product is finished. For a cake that you are selling it would be a part of the cost of the cake to you that you are selling to someone else. This would not be a capital gains tax sale.
You would use kilograms (kg) to measure someone's mass in metric units.
It would be too thin and would stick to the product. You can use regular copy or typing paper.