Pool Line is the manufacturer of a pool cleaning system that has been called by the pool construction industry, "the miracle we have waited a lifetime for." The cleaning system is very effective and recommended by all consumer magazines. The result is that 93 percent of all new pools have the system, and 94 percent of all pool owners buying replacement systems choose Pool Line. The relevant product market is:

Indicate whether each of the following companies is primarily a service, merchandise, or manufacturing business. if you are unfamiliar with the company, use the internet to locate the company's home page or use the finance web site of yahoo. 1. alcoa inc. 2. boeing 3. caterpillar 4. citigroup inc. 5. cvs 6. dow chemical company 7. ebay inc. 8. fedex 9. ford motor company 10. gap inc. 11. h& r block 12. hilton hospitality, inc. 13. procter & gamble 14. suntrust 15. walmart stores, inc.