Support & Services

We are committed to providing customers with comprehensive technical support and services to ensure the stable operation of your optical module products

Product Documents

Provide detailed product manuals, technical specifications and test reports to help you fully understand product performance and usage methods

Technical Support

Professional technical team provides you with 24-hour technical consultation and troubleshooting services to ensure timely problem resolution

After-sales Service

Provide at least one year of product warranty service to ensure your investment is fully protected

Logistics Support

Global logistics distribution network to ensure timely delivery of products and provide real-time logistics tracking services

Customer Training

Provide product use and maintenance training to help customers master product operation skills and fault handling methods

Performance Monitoring

Provide product performance monitoring services to timely detect and solve potential problems to ensure stable system operation

Customer Service Commitment

  • 1. Provide the factory inspection qualified report of the product
  • 2. Provide the manual and test report of the product
  • 3. After-sales policy of minimum one-year warranty
  • 4. During use, if there is a quality problem, after receiving the user's fault information, it will respond within 24 hours and solve the problem immediately
  • 5. Regularly visit customers and accept their suggestions for quality improvement with an open mind
  • 6. Cohlight offers customized ODM/OEM services for coherent optical modules, covering tailored design, verification and mass production based on customer requirements.

Technical Support

TEL: 86-27-87106345-8020

E-mail: tech@cohlight.com

Working hours: Monday to Friday 9:00-18:00

Contact Us

After-sales Service

TEL: 86-27-87106345-8020

E-mail: support@cohlight.com

Logistics inquiry: +86 755 95338

Submit Service Request