Opinions on these chinese LEDs

[mike31154]

Not a bad choice really for the money. Although I might go with the first one you linked to since there's little info on the UV & Violet components on the one you've picked now. The first one lists the ratio of blue to white & the fact that they are Bridgelux LEDs, which is a well known brand. The second one has no info on how many UV or Violet LEDs are included & whether they're separately dimmable.

Looks like the fixture is well cooled with 3 fans, but you'll need to provide adequate clearance inside your hood for circulation. You don't want that too airtight.