#7 is close to being the one. We like how you incorporated the initials NESP that could be used later for hats and shirts as a smaller separate logo. The one critique would be that its looks more like we are involved in motor sports like nascar, rather than a steel company.
Yes that's our main product. We sell the road plates that you see in that video to cities towns and construction companies but we do also sell other types of steel plate with different chemical make ups other than the standard 1" road plate/trench plate.
#9 if possible could you design something without the checkerboard look, but the road in the middle is good and the steel plates are good but some of us are just not sold on that pattern.