Hi geckopia,
You may try sending your proposal to the following companies I found off SaleHoo. I made sure they have been online for more than two years. -
Link hidden: Login to view This one is a hydroponics products manufacturer but is based in the USA.
Link hidden: Login to view This is based in Australia and supplies hydroponic pots and tubs wholesale.
Let me know if you need further help. Cheers! :)