CO2 fiber marking machine is widely used in nonmetal industry such as tobacco, food, drink, wine, leather, plastics, wood, jade, carnelian, etc.
If you want to mark some logos on the cookies after you've got them from your oven, you can use CO2 Fiber marking machine. It might be a perfect choice for you.
Here are some logos that I've made today. I tried to find the focus of the laser at first, so the result of the middle one didn't go well. Then I tried again. The bottom logo seemed fine, but I might have tried too hard. The top one turned out great. Practice makes perfect.