比利时采购需求：牛用土霉素，鸡用土霉素，盐酸土霉素，土霉素价格，氧维生素，骆驼-兽药

I'm looking to export some products to Afghanistan and would like to get more details about the whole process. Could you provide me with the necessary steps involved, including any documentation required, shipping options, and any regulations I should be aware of? I want to ensure a smooth transaction and timely delivery. Additionally, it would be great if you could inform me about any potential challenges or delays I might encounter when shipping to Afghanistan. Understanding the logistics and any special considerations for this destination would be really helpful. If there are specific shipping partners or services you recommend, please let me know.