The Z visa is the legal visa required to be obtained by foreigners who are going to China for a teaching position.
To apply for a Z working visa you require:
All documents need to be legalised by the Chinese embassy in your home country. This differs country to contry however it typically involves your documents going through a 3 step process.
Just send us a facebook message or email stating what documents you have and where you are at in the process to email@example.com and receive a quotation back.