I need a simple but elegant and well designed brochure

Information for the business: Water industry
Industry: Technology
Design details: I need a simple 4 page A4 brochure that will be produced in low volume (35 pieces). I'll supply all the text (about 600 words) and all the images (16 high res photographs & 2 CAD images). It needs to be in colour.

I want the artwork to be designed to a high standard - it must look very professional. I can give you guidance on branding, colours, and the logo when we start work. I need to see examples of similar work that you have carried out.
Target audience: Technology professionals in the water industry
Number of pages needed: 4
Content on the front/back side and body: Title, photo, body text
Ideas for the visual style: I will provide an example
Things to avoid: Cheap looking design
Preferred colors: Blue
Extra notes: I will want a fixed price quoting for the work before we start.

The design style must be 'approachable and friendly but professional'.