Using a Manufacturers directory to find a quality supplier

Finding the right type of manufacturer to work with can be a tricky process. There are several manufacturing directories you can use in order to find several suppliers but trying to find a quality supplier can be a trickier process. The manufacturing directoryyou may be working with could be one that simply offers names of the manufacturing companies that you can work with and they don't provide you with a lot of detailed information about the supplier. Obviously you need to know as much as you can about the supplier such as their pricing structure, deadlines, work ethic, etc. How can you find a manufactures directory that will be able to provide you with the right type of information that you need to create successful products for your customers?