Logo & stationery

I need an urgent logo for an engineering company specialized in water purification systems (support and service) for pharma and soft drinks companies. They need a logo which communicates technology, quality, and innovation. Company has a name similar to "Water Management Corp" . Bids should include logo, 3 business cards, letterhead and envelope design (standard stationery). Winner should submit at least 6 different concepts for logo and modified them till our complete satisfaction. If you already want to submit samples based on the name described above, please do so. Thanks and happy bidding.