Guilin GLSUN Science and Tech Group Co., Ltd

Welcome to Guilin GLsun Science and Technology Group Co., Ltd. (GLsun), where innovation meets excellence in the field of optical communication technology. Established in 2001, GLsun has grown from a small-scale manufacturer into an industry leader with a global footprint. Our commitment to quality and customer satisfaction drives us to continually push the boundaries of what is possible.

Our Mission & Vision

At GLsun, our mission is to empower the world with cutting-edge optical communication solutions that are reliable, efficient, and sustainable. We envision a future where our technologies not only connect people but also contribute significantly to the development of smart cities and industries.

Company Overview

• Founded: October 25, 2001

• Location: Guilin, Guangxi Province, China

• CEO: Mr. Peng Hui

• Subsidiaries: 5

• Employees: Over 580 employees as of 2025

• Key Clients:  Huawei, ZTE, Fiberhome, Innolight, Lumentum, etc.

Core Competencies

GLsun specializes in the R&D, production, and sales of high-end semiconductor laser chips and components, active and passive optical devices . Our expertise spans across various stages of the optical communication supply chain, including chip manufacturing, component assembly, integrated modules, subsystems, and transmission equipment

Product Range

1. Full range of Mini, Relay, Cascade, Rotary, MEMS and Magneto Optical Switch

2. 2.5g, 10g, 25g optical laser chips and detector chips

3. Free Space Isolator (FSI), In-line Isolator, High Power Isolator, PM High Power Isolator

4. SM/MM FBT, PLC Optical Splitter and Optical Circulator

5. OTS3000 optical communication integrated platform,functional plug-in module slots includes OEO, WDM, AWG, OADM, EDFA, DCM, SOA, OLP, OBP, OPD, OTDR...etc.

Our Strengths

Innovative Technology: Our full-process semiconductor platform supports advanced manufacturing techniques including MOCVD epitaxial growth, quantum well nanotechnology, and 3-inch holographic exposure gratings.

Comprehensive Product Line: We offer a wide range of products from optical chips to integrated modules, serving sectors such as telecommunications, big data, cloud computing, IoT, medical applications, and cybersecurity.

Quality Assurance: Certified by ISO9001:14001 and compliant with RoHS standards, ensuring our products meet the highest quality and environmental protection requirements.