埃塞俄比亚采购需求：石墨、玻璃块、沸石、滑石粉、电气石、海泡石纤维

I'm reaching out with an interest in purchasing tourmaline, as we're looking to expand our product range. Could you provide more details about the various types and grades of tourmaline you have available? We are particularly interested in understanding the specifications, quality, and pricing for bulk orders. Additionally, it would be great to know about your lead times for delivery, as well as the minimum order quantities you typically work with. If you have any samples or relevant certifications, please send that info along. We're excited about the possibility of collaborating and look forward to your prompt response!