What documents do I have to bring to CVASC?

Hi,

I'm a citizen of Canada (also born in Canada) and I need a L-Visa (tourism) for a trip to China in approximately 1 month. I tried getting more information by calling them, but the answer provided by the robot was very confusing... It's my first time traveling to China, so I don't know what to bring exactly to CVASC. What are the documents needed to acquire a L-type? Also, how long does it take to obtain it? Could I get it before my trip in 1 month?

Thank you