越南采购需求：光电元件、光电设备供应商、B2B光电制造商、光电技术解决方案、定制光电产品、光电系统集成

I'm interested in understanding how the procurement process works for your products. Can you provide me with a detailed overview of the steps involved, from order placement to delivery? Specifically, I'd like to know about lead times, payment terms, and any minimum order quantities that may apply. Additionally, it would be helpful to learn about your quality control measures and any support you offer during the purchasing process. I'm keen to ensure that we have a smooth collaboration moving forward, so any insights you can provide would be greatly appreciated. Looking forward to your response!