Logo reflects the mechanical nature of your business with the representation of the gear while it also implies your international range due to the insertion of the globe. Contemporary serif font creates good balance between 'mark' and type.
Finally an earth map that shows the USA and not Africa/Europe at the center.
I love the two types of fonts you used and #30 slightly better than #29.
Although most is mechanical, it is not all mechanical and to some customers it might look a bit odd hence I looked more at globes / earthmap or any other non descriptive logo design.
I also feel that those gear design were used a lot if the 60 and 70's. I worked at a company in Europe long time ago and their design had this mechanical feature.
Sorry, these ones did not work for me. Hard to put in words but there was an other entry a bit similar which I already had indicated as "not interested".