Can a person who went in beijing with a business visa(F) holder can get a police certificate?

I went to Beijing with a business visa(F) and work there as a maid for 9months and had a 10days vacation to Singapore. I was fake by the Philippine agency,they told me that I will be an English tutor and that they gonna change my visa into a working visa(Z) when I arrived there,but it never happened so I decided to go home after i finished paying the salary deduction placement fee. Can i get a police certificate there? I want it to be notarized in Chao yang District. I need it so badly because I'll gonna apply for my permanent resident here in Canada.