As an art director, the first thing I would tell you is that you need to diversify the typographic palette you’re using. I like the font, but you’re limiting your solutions. Clients tend to be a literal bunch and I would assume your clients would especially be so. By using the same gothic sanserif, you are putting all your eggs in one basket and if the client doesn’t care for it, you’ve sabotaged all your options. There are plenty of ways to render tech, especially with an emphasis on precision, math, and partnership. For instance, “precision” would suggest fine, detailed elements that would be a nice changeup from the blocky letterforms and iconography you’re using.
A somewhat subjective second thing is that I’ve never been a fan of setting a name in a typeface and calling it a logo. It goes to the heart of a logo being distinctive. While most of these options do do something more than that, it’s not by much.
I preface the next point by saying that I love simplicity and minimalism. I think, however your range of graphic adornment (with the exception of row 4) are so minimal so as to be vague as to what it’s trying to be telling me. Be especially wary of iconography (=>) you need to explain. Even if your clients get it, you need to be able to rest assured that their customers understand it. That said, while I like what you were aiming for, it’s not successful yet. I think it could be accomplished and is worth another hour figuring out, but it’s not there yet.
I agree with RaftPeople who said that row 4 “reads” chemistry.
Of all I think that row 2 shows the most creativity. I like that it starts to evoke a mathematical function and almost kinda suggests the two portions of the “8” could be “working together” like interconnected gears. The thing that makes me nervous is this gets into renaming territory, which — depending on what they have trademarked, could be at worst infeasible and at best awkward when it comes to customers knowing how to spell or refer to the business. Think of this movie example: is it “Se7en” or “Seven”? If it’s the former, how do you pronounce that? (Mind you, I love the treatment). We’re in an age in which everything is going to be entered into a computer: web search form, database, search field, etc. Your client especially. Just be aware how your logo solution is going to affect that. The same caution applies to row 1 as well.
Not sure what row 5 is supposed to be doing. For that matter, what are the yellow screens showing in general?
I do think that the graphic impact of your work does show a professional sensibility, so I think you’re well on the way to delivering some top-notch options. I just think you need to branch out graphically and typographically a bit.