英国采购需求：电动滑板车、电动平衡滑板车、电动滑板车电机、电动两轮站立式滑板车、电动独轮两轮车、折叠电动滑板车

I'm curious to know if the product I'm interested in is designed for self-assembly. It would be helpful to understand if it comes with all the necessary components and if any specific tools are required for assembly. Additionally, could you provide details about the assembly instructions? Knowing whether it involves simple steps or if it's a more complex process would greatly assist in my decision-making. Thanks!