Corporate identity, logo, business cards, company letterhead

Our company name is EMW Solutions we want a professional designer to design our corporate identity, logo, business cards, brochure layout and letter head.
We are currently using a plain letter logo(Please se the attached) and would like to stick to something similar but with a twist.
Our Company is in the electrical and mechanical engineering field we manufacture automated weighing and packing machine. We specialize in automation.
We want to use the logo to brand our machines normally we laser cut the branding in the steel sections of the machines or do a face print on the controllers so the logo should not be to complex otherwise it will be difficult to use it for branding purposes on our products . Colors that can be used in the logo etc is black, silver, Grey, white, blue, red. Not all of the colors have to be used in the logo etc. But you can feel free to present any other color combinations we are open for suggestions.
If we are satisfied with the design we would like to build a relationship with the designer and us him/her to do branding for our products and a proper website and e-commerce store.
If you require any additional info please let me know.