尼日利亚采购需求：制冰机，2吨制冰机，2吨制冰机，盐水制冰机

I'm looking to purchase 2 tons of ice block machines for my operations in Nigeria. Could you please provide me with the detailed pricing for these machines? I'm particularly interested in any bulk purchase discounts you might offer. Additionally, I would like to know about the shipping options available to Nigeria, including estimated shipping costs and delivery times. Any information on warranty or after-sales service would also be appreciated. Looking forward to your prompt response with the details!