How about Yinchuan Longji silicone material?
The company is in a period of rapid development, and the key to treatment depends on your ability (you should have a bottom in your heart). If you are confident, you can talk higher (the risk is that the company may adjust your position if it decides that you are not suitable). If you can make up for yourself, the company will give you some opportunities for progress and let you continue to work in the enterprise! I don't know the specific salary, but I know that the salary of their workshop supervisor should be 2.5k~5k, which is related to their work performance (bonus) and overtime pay! (Because I am a member of Longji)