印度采购需求：7440-23-5，钠

I'm looking for high-quality sodium metal with a minimum purity of 99.5%. At this time, we're aiming to purchase a total quantity of 50 metric tons for our ongoing projects. It's essential that the product meets our specifications and is packaged appropriately for safe transportation. Please provide your best quote for this quantity, including details on lead times and payment terms. Also, let me know about your quality control measures and any certifications you hold that verify the product's purity and performance. I appreciate your prompt response on this inquiry.