尼日利亚采购需求：布儒斯特角、浓度梯度晶体、倍频晶体、感应炉晶体、中红外晶体、钕玻璃激光器

I'm reaching out to request more detailed information regarding wholesale pricing and stability for your products. We are considering increasing our inventory and would like to understand the cost structure better, including any bulk discounts you may offer. Additionally, it would be helpful to know how your products perform over time, particularly in terms of durability and reliability. Could you also provide insights into your manufacturing processes that contribute to the stability of your products? Any relevant certifications or testing information would be greatly appreciated as we assess potential orders. Understanding these aspects will help us make informed decisions and potentially establish a long-term partnership. Looking forward to your prompt response!