坦桑尼亚采购需求：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 reaching out to inquire about your Bifocal Transition Sphere High Power Lens products. We're particularly interested in understanding the specifications, including the different options available, material types, and any specialized coatings or treatments that enhance performance. It's crucial for us to know the lens' optical properties, manufacturing capabilities, and potential customization options that you offer. Additionally, please provide information regarding your pricing tiers, minimum order quantities, and lead times for production and shipping. It would be great to know if you have any existing certifications or compliance with international quality standards. We're looking to establish a reliable partnership, so insights on your after-sales services and warranty policies would also be appreciated. Thanks!