As for the job you are engaged in, it depends on your personal career plan. If you still want to dry plastic, it is usually technology or sales. I personally recommend sales, because it develops faster and makes more money. I know a senior in sales. Three and a half years after graduation, I worked as a sales supervisor in Shandong.
The salary is generally around 2500, and the sales will be lower. Because of the commission, you can earn more and earn less according to your performance.