哈萨克斯坦采购需求：伊维菌素、伊维菌素、阿苯达唑粉、土霉素、富马酸泰妙菌素、动物维生素

I'm interested in purchasing a bulk quantity of your product, specifically the sodium variant in a 25 kg packaging. Please provide me with your current price for this item, including any applicable discounts for larger orders. Additionally, I would like to know about your minimum order quantity and lead time for delivery, as these factors will greatly influence our decision. Furthermore, could you share details about the product's specifications, including its purity and any relevant certifications? I'm also keen on understanding your payment terms and whether you offer samples for testing before placing a larger order. A prompt response would be appreciated as we are looking to finalize our sourcing soon. Thank you!