Established in November 2000, Crystalwise Technology Inc. (CWT) is the first professional manufacturer of oxide compound substrate in Taiwan. In these years, CWT has successfully developed several types of substrate and put them in mass production, including LiTaO3 and LiNbO3 Substrate used for SAW Filter Device and Sapphire Substrate used for Blue-White LED Epitaxy. In 2009, CWT founded a subsidiary company in Shan Dong Province of China. CWT can supply demands for domestic customers in China from the subsidiary company easily. Merged with Sino Sapphire Co., Ltd in January 2013, CWT becomes one of the world-largest suppliers of Sapphire Substrates used in Opto-Electronics manufacturing. Specialties 2"、4"、6" Single-Side Polished Sapphire Substrate 2"、4"、6" Pattern Sapphire Substrate Sapphire Optical Windows, Sapphire Carriers LiTaO3、LiNbO3 Crystal & Substrate Metallized Ceramic Substrates, Metallized Sapphire Substrates