Trial for a project

I designed this PCB to test multiplexing some Photodiode chips. The PCB arrived on time and well packaged. Despite being manufactured in another continent, the PCB was made fast and arrived in less than a week. The chips were super easy to solder on, so I was able to test it pretty quickly. Everything that I designed into the PCB was there (ex. texts, diagrams, etc.). I retested the PCB several weeks after I soldered on and it still works pretty well. The image below shows the chip with all its components