To apply for a China visa in Macau, you can also go to the Office of the Commissioner of the Ministry of Foreign Affairs of the People’s Republic of China in Macau, besides the China Travel Service (CTS) agent mentioned.
The advantage of applying for a visa here is that the fee is lower. But it also means that speed will be compromised. It normally takes three days to process a visa, regardless of the type of visa applied for. There is express service, but extra fee has to be paid.
Take one-entry China visa. CTS charges 210MOP, but you can have it the following day. If you go to the Office of Commissioner, you pay only 150MOP, but it will take 3 workings days before the visa is ready.
The good news is that the Office of the Commissioner has an English website to explain all the China visa matters.
Add: No. 992, Avenida do Dr. Rodrigo Rodrigues, Macau