Dear sir, Our company produce CR39,1.56 mid-index optical lenses and optical frame. Specification: dia 65mm,70mm color: white,green All kind of products: UC,HC,HMC,HMC+EMI If you are interested in our products,please let us know. We will offer you best price. we hope that we can enter into direct business relations with you. we look forward to your favourable reply. yours truly Jinling Sun