Have you considered the location of the plastic manufacturing company that you are going to use? There may be one that is located in your general area and this can benefit you in a number of ways. In some cases, it will help to reduce the amount of time that it takes for you to get the products that you need. This is either because they are going to work with you as a local business or because of reduced shipping times.
http://www.artipot.com/articles/1685899/tips-on-choosing-plastic-manufacturing-companies.htm
