Since 2001, GLSUN has been committed to one thing: mastering optical technology through independent R&D and full-scale manufacturing. What started as a focused innovation journey has grown into a trusted global brand in optical components and solutions.
Optical Switching — Built In-House Since 2001
From MEMS to OCS, every optical switch is self-developed and self-produced, ensuring full control over quality, performance, and innovation. With over two decades of expertise, GLSUN offers one of the most mature and scalable switching portfolios in the industry.
Leading in China — Optical Isolators
GLSUN stands at the forefront of isolator technology, delivering industry-leading performance, reliability, and volume capacity. Our position isn’t just about scale — it’s built on precision engineering and long-term market trust.
Scale Meets Stability
A robust manufacturing system, strict quality control, and large production capacity empower GLSUN to support global demand — from telecom networks to hyperscale data centers.
More than 20 Years of Optical Expertise, GLSUN — Not Just a Manufacturer, But a Long-Term Optical Partner.
