What is built-in spray paint, is it good, and what types of built-in work is it suitable for?

Understanding what built-in spray paint is, how it differs from house paint, what types of built-in work it is suitable for, and what surfaces it can be used on, along with recommendations for choosing industrial spray paint for interior decoration.
Industrial spray paint is what? How many types are there? How to choose the right one for the job?

What is industrial spray paint? How many types are there? A deep dive from IL lacquer to epoxy to PU, complete with a comparison table, how to choose the right one for wood and metal work, and professional spraying steps, all in one article.
Wood paint, wood stain, polyurethane wood finish, wood oil, and lacquer are different in their properties and uses. Which one should you choose?

Introduce the differences between wood paint, wood stain, polyurethane, wood oil, and lacquer, along with guidelines for choosing the right application based on surface, durability, and project characteristics to ensure the wood remains beautiful for a long time and is cost-effective.