加拿大采购需求：无人机、遥控车、益智玩具、积木、游戏桌、国际象棋

I'm interested in sourcing a drone that features stealth capabilities, making it undetectable by radar. The ideal drone should also be capable of carrying a payload of up to 1 kg. Please provide details on any models that meet these criteria, including specifications and pricing information. Additionally, if there are options for customization or enhancements, I would love to know more about those as well. Looking forward to your response!