尼日利亚采购需求：电池存储、便携式电池、内置电池、便携式充电器、便携式搅拌机、外置电池

I'm looking to get more details about the training programs related to solar insulation. Specifically, I'm interested in understanding the key concepts covered, the duration of the training, and any certification provided upon completion. It would also be helpful if you could share the training format, whether it's online, in-person, or a hybrid approach. Additionally, I'm keen to know the prerequisites required for the training and if there are any recommended resources or materials to prepare beforehand. If you could also provide insight on the cost involved and any upcoming schedules, that would be greatly appreciated. Looking forward to your detailed response!