斯里兰卡采购需求：铜条、黄铜条、铜条、青铜条、铜镍合金条、铜箔

I'm reaching out to inquire about brass sheets with specific dimensions of 4 feet by 14 inches. We're looking for high-quality material suitable for various applications, so it's essential to understand the thickness options you offer as well as the overall availability. Additionally, could you provide details on any potential finishes or treatments that might be available for the sheets? Moreover, I'd appreciate information regarding your pricing structure, including any bulk purchase discounts, minimum order quantities, and lead times for delivery. If you have any standard or stock items that align with these specifications, please let me know. I'm looking forward to your prompt response so we can discuss this opportunity further.