尼日利亚采购需求：碱性紫 3，甲基紫晶体

I'm reaching out to inquire about the pricing for a bulk order. I'm interested in purchasing a total of 500kg, preferably packaged in 25kg units. Could you provide me with the pricing details for this quantity? It would be helpful to know if there are any discounts for bulk purchases or additional costs for shipping. Additionally, please let me know about the lead time for this order and if there are any minimum order requirements I should be aware of. Looking forward to your prompt response so we can explore this purchase further.