尼日利亚采购需求：旋转钻机、液压破碎桩机、液压动力单元、蛤壳式伸缩臂、液压打桩机配件、打桩及施工设备

I'm looking to purchase four units of a bored pile machine. Please provide me with details regarding the specifications and features of your available models, as well as any warranties or support options you offer. Additionally, I would appreciate information on pricing, lead time for delivery, and any bulk discounts available. If you have brochures or technical documents, that would be great too. Looking forward to your prompt response with the necessary details to proceed with this order.