美国采购需求：库存成品镜片

I'm reaching out to inquire about the availability of your stock lenses. I'm specifically interested in understanding the different types and variations you have on hand. It's essential for us to know the available specifications, features, and any possible bulk order discounts. Additionally, could you provide details on the lead times for delivery and the minimum order quantities? We're looking to establish a reliable supply chain, so any info you can share would be greatly appreciated. Thank you!