Im planning to visit Shenzhen this December. Basically my intention is to visit some shopping places and will contact with suppliers.

Firstly, I'd like to tell you that there is a Muslim Hotel in SZ, which is at No. 2013, South Wenjin Road, Luohu District. But it is a little expensive for you, with the accommodation fare of CNY200-400.

For your questions, here is what I know:
1. The local 2/3 star hotel generally costs CNY120-200. For some good ones, it costs more.
2. If you just would like regular meals, CNY50 or around for three meals.
3. The attractions in SZ are Window of the World (WOW), Splendid China, National Cultural Village, Safari Park, Dameisha & Xiaomeishan and OCT east.
4. If you just use local bus, and MTR, CNY20-30 is sufficient per day for transport. Anyway, it depends on your journeys.
5. Don't worry! It is pretty safe in the city.