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As with the previous comments, I would of suggested sticking with Kawasaki.com as it is already a world reknowned brand. However I can see that kawasakirobotics.com is already a live entity. If you are going to stick with the two domain names, make sure that you point a couple of links back from the brand name to pass a little authority. Then maybe work on getting the robotics brand out there with a bit of a link building campaign to other releveant robotic and manufacturing based websites. Hope this helps a little.