紫光国微：子公司唐山国芯晶源电子有限公司的差分晶振产品在2018年就实现批量销售

Core Viewpoint - Unigroup Guowei (002049) has confirmed that its subsidiary, Tangshan Guoxin Jingyuan Electronics Co., Ltd., has been mass-producing differential crystal oscillators since 2018, which are now widely used in optical modules [1] Group 1 - The differential crystal oscillator products include various size specifications such as SMD7050, 5032, 3225, 2520, and 2016 [1] - These products primarily cover output methods like LV-PECL, LVDS, and HCSL [1] - Differential crystal oscillators are essential components in high-speed optical modules, providing high precision, stability, and low jitter clock references that directly impact transmission performance and reliability [1]