Letter head, business cards, email sign off

We are looking for a professional and eye-catching letterhead, business cards, and email sign-off designs for our company. We already have a logo, so we are looking for designs that complement it. The letterhead should include our company name, logo, and contact information. The business cards should be designed with our logo, name, and contact information. The email sign-off should be professional and include our company name. We are open to different design styles and colors, but we prefer a modern and minimalist look.