This is an abstract "be" combined into one icon. The lines forming the "E" show movement representing express. The lines look like they are protruding from a building which represents your company.
Hi, I keep coming back to this one, but for coincidental reasons. Now that I read your comment, I appreciate it more. Back to the coincidence...the three lines resonate with some scientific assays (gel bands) so I like them, but without the vertical (building) part. I've given this a provisional #1 ranking, which I think would allow you to submit additional designs. What I'd like to see is a version without the building and with the endpoints of the 3 lines closest to the B being the same height as the B. Then a version on white background. Thanks for the submission and thought on this.