First of all, from a legal perspective. (Main label and washed label) It is your own trademark, or it is authorized by others. This is okay. Brand promotion, this is what you have to consider Question.

As for whether there is such a factory? It depends on your quantity? If it is too small, just go to a general tailor shop. If the quantity is still relatively large, it is best to measure with the manufacturer. Generally, what you want to do can be done in the finishing department, along with ironing and packaging.

Usually ordinary factories are not willing to do this kind of thing. It is best to have an acquaintance introduce you to it. It will be easier to handle. A little.