Shenzhen Olssen Technology is a company which is specialized in sapphire crystal, we have our main engineer with more than 20 years rich experience, advanced production equipment, and professional technicians ,we can produce various kinds of large size and high difficult products with high quality (including mobile glasses,optical lens ,special shape products, watch glass, watch case etc. We choose raw materials strictly ,so quality is guaranteed and price is also reasonable as we are the factory.Sincerely hope that we can develop and cooperate with partners all over the world,and get win-win!