It was delivered quickly, and appears to be well built.And the vendor should have spent a little money on a better translation of the user manual, Because this product only has English manual,but if you're an engineer/designer with any experience, you'll figure it all out. I'm happy with it so far.
Although I've only been using it for a few weeks, this power supply has proved to be useful in powering many of my lab projects, especially being able to source enough current. The voltage controls and display seem accurate when measured with my Fluke meter.