This is quite possibly the worst job for a foreigner with any credentials in Tianjin. They claim to offer a "competitive" salary for full time teachers. After speaking with several other foreign teachers in Tianjin about my salary and schedule, they promptly laughed and/or offered me a hug.
In addition to being paid poorly, they will also force you to teach winter and summer courses (on top of your already tiresome schedule), which you are given a laughable amount of overtime pay for. So while other teachers are on holiday, E.F. employees will be working close to 50 hours per week with absurdly low overtime pay.
In conclusion, if you fancy working more and being paid less than all of your peers, this is the job for you!