Holding Indian Passport. Visiting Beijing-Hongkong- Macau as tourist. Let me know visa formalities

I am Indian citizen holding Indian Passport and visiting Beijing- Hongkong- Macau from May 25 to June 04 2013 as TOURIST. Please let me know the visa formalities. Is it required? If required where do i get it in Mumbai. No one is responding to my calls on telephone numbers +91- 022- 66324303/66324304/66324305/66324306. Please help.