FS's after-sales service is always responsive and satisfies me.

When I didn't know how to use it properly, FS's technical support provided me with timely assistance and solutions. It has been a great shopping experience.

I really appreciate your help and the high-quality products FS provides.

I have put the two transceivers to work, and they are working well. I am using these in a personal environment rather than professional, but I will likely be buying more in the near future.

Good news! I got the parcel today and all is well! I’m officially operating at 25G! You’ve got some fantastic products and unbeatable customer service.

The transmission rate is stable, making it suitable for high-demand environments such as data centers and enterprise networks.