CNMC is a leader in China in large-size single crystal growth using the hydrothermal method and is the only supplier worldwide of high grey track resistance (HGTR) potassium titanyl phosphate (KTP) crystals with low conductivity, as well as the world's only supplier capable of providing KTP electro-optic Q-switches in large quantities. Its hydrothermally grown periodically poled potassium titanyl phosphate (PPKTP) crystals have been successfully applied in quantum technology, including polarization-entangled photon sources, and meet the application needs of major laser engineering projects, advanced laser processing and manufacturing, and quantum communication, among other fields.