What oil do you usually add to plastic color matching?

I do color mixing, and the oil you said is oil swelling. Its function is to make the toner spread better. I don't know what color you want to adjust. Generally, monochrome is cheaper. In addition, if the color is bright or has special effects (such as pearlescent, gold and silver, luminous), it will be more expensive. Also, I don't know what requirements you have, especially if the export or high-end products require ROHS and other standards, so this price will go up. But if not, then the general toner line is not too expensive.