In principle, carbon dioxide laser machines cannot carve stainless steel because it is a high reflective material. However, we can process the shape we like by coating or painting the stainless steel bottle and then laser engraving. We can spray three coats of dry molybdenum lubricating oil on the black pattern, wait for 15 minutes to dry thoroughly, and then perform laser engraving. We can also clean excess black lubricating oil with clean water, but using a varnish thinner will be more efficient.