美国采购需求：无人机、遥控无人机、四轴飞行器、遥控四轴飞行器、GPS 无人机、遥控船

I'm interested in exploring options for drones tailored to various applications. Specifically, I would like to know more about the range of models available, including their specifications, capabilities, and any unique features that differentiate them from others in the market. It would be great to understand the weight capacity, flight time, and operational range as well. In addition, please provide insights into customization possibilities, pricing tiers, and lead times for bulk orders. If you have any promotional materials, catalogs, or online resources showcasing your drone lineup, I would appreciate that as well. Looking forward to your detailed response, as I'm eager to find the right solution for our needs.