Bathroom cabinet factory, PVC, is there a primer?

There is a recruitment. Details are as follows:

Bathroom cabinet factory needs a master who sprays primer with a coolie to get a job, about 2000 yuan a month. Can bear hardships, call if you are interested, and the salary is high. The factory is located in Chaoyang Village, Zhanggudian, Changge.

Primer is the first layer of coating system, which is used to improve the adhesion of topcoat, increase the fullness of topcoat, provide alkali resistance and provide anti-corrosion function. At the same time, it can ensure the uniform absorption of topcoat and make the coating system play the best role. It is wrong to say that topcoat can be of good quality without primer, because the functions of topcoat and primer are different. Topcoat focuses more on the final decoration and appearance effect, while primer focuses on improving adhesion, anti-corrosion function and alkali resistance.