In the height of summer, when all things flourish, Cotest Photonics celebrated its fifth anniversary.

Over the past five years, we have experienced everything from the initial stages of entrepreneurship, struggling through the quagmire of a disastrous start, to finally finding our footing and steadily moving forward.

The first VCSEL module machine was shipped under challenging circumstances due to the pandemic outbreak.

Looking ahead to the heights, and reflecting on the journey so far:
June 2019: Ketaiguangxin was established;
September 2019: The first VCSEL module testing machine was successfully developed;
May 2020: The first VCSEL module machine was sold and accepted;
August 2021: The SPAD module comprehensive testing machine was delivered;
November 2021: The VCSEL wafer full-function testing platform was delivered and accepted;
April 2022: The first LiDAR light source comprehensive R&D testing platform was delivered;
November 2022: The first domestic 100ns VCSEL narrow-pulse testing machine was released;
March 2023: The detector wafer fully automatic comprehensive testing platform was delivered and accepted;
October 2023: The industry's first partitioned illumination VCSEL narrow-pulse testing machine was successfully developed;
January 2024: The optical communication VCSEL dynamic parameter automatic testing platform was successfully developed;
April 2024: The 2D full-channel wafer comprehensive testing machine was delivered and accepted;
...

△100ns VCSEL narrow pulse test system

We always adhere to a customer-centric approach, committed to providing customized products and the highest quality services to our clients.
For customers across the entire industry chain, Cotest  Optoelectronics provides complete optoelectronic device testing solutions at the wafer, chip, module, and application levels. From R&D to mass production, Cotest strives for excellence, offering differentiated testing systems.

Although change has been constant over the past five years, we have never wavered.
Our relentless pursuit of our goals has given us the courage to face any challenge.
Our unwavering commitment to our original aspirations has empowered us to keep moving forward.
Standing atop the peaks, we feel the vastness of the wind. Facing the ever-changing environment, we actively explore, maintaining our perseverance and resilience, resonating with the pulse of this era.
Along the way, we sincerely thank all the partners who have given us their trust and support.
Five years is just the beginning; our story continues.
The road ahead may still be full of challenges, but we will, as always, chase the dawn and continue to write our glorious chapter.
Happy 5th Anniversary, Cotest !