巴基斯坦采购需求：控制器逆变器、发电机、水平风力涡轮机、太阳能电池板、垂直风力涡轮机、风力涡轮机玩具

I'm looking for a 5-kilowatt unit and would like to know more about the options available. Please provide details on the specifications, pricing, and lead times for your current models. It's important for me to understand the features offered, as well as any customization options you might have. Additionally, I would appreciate information on warranties, after-sales support, and any bulk pricing discounts if applicable. If there are any documentation or certifications available for these units, please include that as well. Your prompt response will be greatly appreciated as I'm keen to finalize a decision soon.