Any review on Mijing LWS-301 intelligent Laser Welding Station?

[sn4k3]

Recently i step on this: https://www.aliexpress.com/item/1005003791546737.html
Laser soldering without the problem of the air flow. Something i wait for sometime.
Looks great in theory but anyone have any experience with such device?

[thm_w]

The youtube vid is amazing.

Laser power: 15W*2, 10 levels adjustable
    Laser spot size:10mm/6mm
    Cooling method: air cooling
    Power：100-220V±10%，50HZ/60HZ±5%
    Machine size:216*110*129

Q: Does the laser hurt the eyes?
A: No, it doesn't. Long time use is recommended to use the monitor or wear glasses.

Q: I see harsh light in the video and make my eyes uncomfortable.
A: That's because of the strong light captured by the camera, but invisible to the naked eye.

Q: What is its maximum temperature?
A: Due to the characteristics of the laser, it produces different temperatures for different materials, a test is recommended.

Q: Can it work for all chips or IC?
A: No, it can't. Some chips are sensitive to temperature, it is recommended to use traditional methods.

Q: Can it control the temperature?
A: No, but you can adjust the power level 1-10 to control the heating speed.

Q: Does it need to adjust the focus?
A: No, it doesn't. Suggest effective distance is ≤ 100 mm.

Q: Can I adjust the size of the heating area?
A: Yes, you can change the pen lens, switching between 6mm and 10mm areas.

So I guess beam size is large enough that its somewhat safe to use without laser goggles.
And there is not temperature regulation, so you must manually control everything, and shut off power once the part is loose.

Questions:
- How does it work so well on reflective components, you'd think most of the energy would not reach the IC.
- The ramp rate is so high it will damage components, so to be safe do you need to dial it back to the same ramp rate you'd use on hot air anyway?