美国采购需求：眼镜片、透明镜片、防蓝光镜片、变色镜片、处方镜片、半成品镜片

I'm looking to source plano bases made from clear glass, specifically those with a diameter of 75mm and a thickness of 3mm. Please provide details on the pricing, minimum order quantities, and lead times for these items. Having a clear understanding of your production capabilities would be helpful. Additionally, I would appreciate information regarding any available options for customizations, such as coating or polishing. If there are different grades or qualities of glass you offer, please include that too. Let me know if there are any specifications or certifications that these lenses meet. Looking forward to your prompt response!