From what you've written it would appear you have several hundred thousand dollars available to get going on manufacturing blueprints, steel mold, (special manufacturing equipment may need to be tooled too), production run, packaging, marketing, shipping and returns? One assumes you already have a Business/Marketing Plan and your corporation registered etc?

If you have a limited budget, you might consider going direct to shower head manufacturers to attempt to strike a licensing deal(s). Let them put up their monies and marketing/distributino expertise while you (hopefully) make money from running royalties (based usually on sales). You can find a list of some of them at:

www.thomasnet.com/nsearch.html?cov=NA&what=Heads%3A+Shower&heading=37303401&navsec=prodsearch

Not all manufacturers would be interested in being a partner with you. These are Contract manufacturers. They have no marketing/distribution divisions merely get paid to produce new products/inventions for others.

On another level, if you have come up with something that is unique, have you considered determining if it is patentable? Have you created a unique name for it that may be trademarkable? Will you need to secure a domain name (perhaps the same name that may be trademarkable?)

Penny