Pros
Large well known company with strong resources. Very strong at product marketing, Company prefers to hire people right out of college so can be a good option for a first job.
Cons
If you are working in a division that is doing well PPG can be a good company to work for. But if your division is not doing well your life will miserable. Most managers are long term employee's and they do everything the PPG way even when there were better options. I saw many employee's dedicated to doing whatever they felt necessary to keep their jobs and not what was best for the business. In the group I was in being over 50 greatly increased your chances of being forced out. Some companies value highly experienced employees. But in the division I was at over 50 meant you were making a higher salary and that was not good.