Chapter 7. Most are totally dependent upon the Big 3 for their sales.(high volume at EXTREMRLY low margins,typically 1 to 2% net based on artificially high sales volume i.e. overhead is exhorbanately high and any substantial decrease in sales results in a loss) Dana Corp. is already closing plants,as are othe rcomponant manufacturers. I'm the owner of an HVAC coil plant and avoid high volume/low margin accounts as though they are the plague,the reward(minimal) isn't worth the risk. By focusing on low volume/high margin accounts we have the ability to tell customers OUR terms,and are not forced into accepting their terms. In the end,all that matters is profitability,not size.Been to too many plant closure auctions where the owner/managment were more concerned with the bragging rights associated with size and who had lost sight of the bottom line.