... Transmission: Over 98% High clear 1.7 Mineral Single vision Optical lensLens Specifications:1. Material: Glass(Mineral lens)2. Index: ... : 40% deposit, balance before shipment or 100% deposit;12. Sample Policy: Free samples for testing(Lower than 5pairs, power unconfirmed ... : CE, FDA, ISO9001:2000.About Wenzhou Redstar Optical Co.,Ltd :Wenzhou Redstar Optical Co.,Ltd, is one of the subsidiaries of ...