Chengdu Yagcrystal Technology Co., Ltd. is an innovative enterprise specializing in novelty and high technology. Deeply cultivated in the field of laser technology for nearly 20 years. The company's Precision optics business involves various materials, such as sapphire, CVD, K9, quartz, silicon, germanium, CaF2, ZnS, ZnSe, YAG, etc. We can provide process, coating ,metallize plane, sphere and aspheric surface with high Precision. Typical features are: large size, high Precision, ultra-smooth and high damage threshold. Taking sapphire as an example, our smoothness can be 10/5, PV ≤1/20, RMS≤1/50 and Ra≤0.1nm. Damage threshold ≥70J/cm2.