It's super likely that Mairtini is a mispelling on the packaging, for what I assume was meant to be Martini like the drink. There are also a few odd names and typos on the color chart included with this set. I did find a couple images of this company's logo online without the extra "i" in the spelling. It seems quite common for this to happen during the translation of products coming out of China, with Paul Rubens color names also suffering from this issue.
Further info will be added to the "lightfast testing and art supply review" section. This includes any other videos I've made about this company, still images of example art, a collection of color charts, along with fugitive fading results. I share my experience on hundreds of pigment and dye ingredients from dozens of painting, drawing and craft supply manufacturers.
If you would like to buy any of the supplies I used in this video, the Amazon links are below. As an Amazon Associate I earn from qualifying purchases. I've also included links to the waterproof inks, pens, brushes and papers I use in all of my reviews. For watercolor, gouache or ink painting, I use small round brushes by Princeton. Heritage series is ideal for a sharp point, small details and snap. Their Neptune series is a synthetic imitation squirrel hair, which is a very soft brush with an amazing ability to hold a lot of water for washes.
Happy painting :)