Can I apply for my Employment License in the China Embassy in HK if I am a Singaporean?

1. I came into PRC from Singapore and have been offered a job. I received the Employment License - do I have to apply for the Employment (z) in Singapore or can I apply in the Embassy in HK?

2. For Employment (Z) application in Singapore, do I go to the Embassy in Tanglin Road or the CVASC at Malacca Street?