Do plumbers in Changchun need textual research? If you take the exam, where to take it, or directly handle it without taking it. Thank you.

If you need to apply for a job, you can apply. Can this unit help you collectively? If you already have a unit, you may wish to consult the personnel department first. If they can't accept it, you have to go. If the unit handles it, you only need to provide 200 yuan money. If the fees at different levels are different, the unit can't do it. You are in Changchun Labor Bureau, on Xikang Road, and someone will ask you how to handle it. On Labor Day, you will be told to go to a place called Labor Inspection Bureau. Certificates are blueprints. Technical grade certificate. That's all I know. I hope I can help you.