continue to improve, to ensure product quality in line with market and customer standard requirements. Our company has a quality assurance system have been established for Blue Light Block, Yellow Lenses Blue Light, Flat Top 28 Bifocal Lenses, Flat Top Bifocal Lenses,1.6 Hmc Lens. We are anticipating to cooperate with you around the basis of mutual added benefits and common development. We are going to never disappoint you. The product will supply to all over the world, such as Europe, America, Australia,Surabaya, Malta,Peru, Frankfurt.We are looking forward to cooperating closely with you to our mutual benefits and top development. We guaranteed quality, if customers were not satisfied with the products' quality, you can return within 7days with their original states.