This is a bitmap. If you need a vector image, there are only two methods: 1. Use software to stroke it. Such as: illustrator and Coreldraw software. These two softwares are vector drawing software commonly used by platemaking companies.
2. Use software to automatically convert bitmaps into vector graphics. For example, Corel Power TRACE in Coreldraw, or AlgoLab Photo Vector, and Freehand software can convert bitmaps into vector images. If you want to get high-quality vector images, you must first choose bitmaps with high resolution (scanning accuracy is higher) and then modify them after conversion.
If you are not familiar with the software, you can search for the three keywords "bitmap to vector image conversion" on the Internet.
The easiest way is to find a plate making company to do it for you. These few words cost only a few dozen dollars. I used to work in the printing industry and often went to plate-making companies, which specialized in this job.
Where can I find a plate making company? Just go to the street and look for places that provide printing services, such as printing business cards, calendars, and notebooks. Even if they are not capable enough, you can still ask them to introduce you to a good plate-making company there. Generally, there are platemaking companies near streets where printing machinery, ink, and paper shops are relatively concentrated.